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We couldn't design a simple acid base indicator experiment.

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A very good example of implementing IBSE with common materials. It can be adapted to different ages of pupils.

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A very easy activity to extract colours from tissue paper. All that students need is: some pieces of tissue paper, plastic cups and water

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Firstly ,may be We start with  one questions.Are you watching documantry? Did you see? While eating  a insect  to  plant ?after then Ask question, what is the meaning of digest?and continue.
As we use video ,text for instance  Dionaea muscipula and Anakonda like plant and animals ,How to this species provide situation  with enzyms
This lesson,for students indicator I think ,Which student is careful?Which student is observation ?

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minimal διερευνήσεις:
Βιολογία:
Παράγοντες που επηρεάζουν την ανάπτυξη των φυτών (φακές + νερό, λίπασμα, φως, . . .) Χημεία:
Σημασία της επαφής των αντιδρώντων. Μπαρούτι από τους μύλους της Δημητσάνας. Πόσο πρέπει να τρίψουμε το κάρβουνο για να εκρήγνυται στον αέρα;
Φυσική:
Υπολογισμός της επιτάχυνσης της βαρύτητας

https://youtu.be/zRGh9_a1J7s

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we can think. For example, in the germination and growth of plant seeds,

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Students could be provided with different food containing simple sugars and complex sugars. Students can then be given solutions to test the sugar content present in the different food items. The same could be related to function of sugars in our body and what would happen when the sugars are taken in excess.

Another experiment could be related to effect of high temperature on enzyme. The same experiment shown could be tried with different temperature and the same could be concluded

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Observation of gauze where the beans are different.

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Pineapple is a fruit rich in an enzyme called bromelain. This enzyme has the power to break the bonds between amino acids, thereby destroying protein. Therefore, when the gelatin comes into contact with the pineapple, it remains softened, as it has its entire chain of amino acids broken. Therefore, many people put the flesh in contact with pineapple juice for a few minutes so that the meat is softer.

In the experiment proposed below, we will see what the enzyme present in pineapple is capable of doing with collagen, the protein found in gelatin. This experiment can be done when the teacher is working on proteins and the action of the enzymes, so that the student sees how they act.

Materials needed

- Unflavored gelatin;

- Slices of ripe pineapple;

- Other fruits such as apple, banana, pear;

- Plastic pots.

How to make

- Make the gelatin without flavor, following the instructions of the package;

- Put the melted gelatin in three plastic cups;

- In one of the pots, put pieces of pineapple; in another pot put pieces of another fruit; and in the third pot put only the melted gelatin;

- Put all the pots in the refrigerator and wait about thirty minutes;

- After time, remove the pots from the refrigerator and observe what happened.

After removing the pots from the refrigerator, it will be possible to observe that in the pot that contained the pieces of pineapple, the gelatin did not harden; and in jars that contained pieces of other fruit, or contained nothing, the gelatin hardened normally.

Papaya and kiwi can also be used to make this experiment because these fruits also contain enzymes, papain and ficin, respectively, that break down proteins. But avoid using these fruits together to avoid confusion.

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my suggestion is that ı make my child do at home and she likes it

The Glass o’ Water Approach

Lesson: The most simple form of light bending, this lesson in the light waves is similar to #1 above.

You will need:

A glass of water

A piece of paper

Sunlight

1. Put the glass of water in the sunlight.

2. Put the paper next to it.

3. Let the sunlight stream through the water and create a rainbow on the pap

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An  easy science experiment is a fun way to explain how rain clouds work.

We need: 1 x jar, tap water, shaving foam, blue food colouring, pipette or glass dropper (if your food colouring doesn't have one)

Fill your jar about three quarters full with water from the tap.

Use the shaving foam to create a cloud on top of the water.

Let the foam settle a bit.

Now drop food colouring into the 'cloud'.  As your cloud fills up, the food colouring will fall down into the water creating a rain-like effect.

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This is a simple experiment that I have done with younger students (elementary aged, ages 5-12).

Soda: Sink or Float

·        Use a variety of canned sodas. Be sure you have different flavors and brands. BE SURE that some are diet, “zero,” and regular.

·        Have students predict which sodas will sink and which will float. (I have my kids create their own predictions/results chart in their science journals.)

·        After students have independently recorded their predictions. Have them share in the whole-class setting. (I create a whole-class predictions/results chart to record our class data.) Have the students explain their thinking while sharing their predictions.

·        Place soda cans in a clear tank. (A large plastic tub will also work- if it’s big enough that students can easily observe the results by looking at it from a bird’s eye view.)

·        Spoiler: Some of the soda cans will sink while others float.

·        Have the students observe and record the results. (Record results on class chart.)

·        Ask the students to explain the results. [Why do some cans sink while others float?]

·        Spoiler: The amount of sugar in each soda type affects its weight and whether is will sink or float.

·        Optional Follow-up Activity: Have the students test their hypothesis by trying other types of sodas not tested.

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Osmosis. Make a shallow hollow in the potato. Put the sugar in the hollow and place the potatoe in a bowl of water (water should be under the edge of potatoe). Observe how the water is moving toward sugar.

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Very eficient experiment.
My

my suggestion is to prepare sugar solutions from sugar cubes, sugar tos and powdered sugar.

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I find the increase in mass of iron wool on combustion to be effective in stimulating interest, as it is initially counter-intuitive. to students whose previous experience of combustion is large pieces of coal burning to smaller ashes.

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I do enjoy "everyday life experiments" as also my students does . One of my favorites is the bacteria growth which can be gamificated in investigation stories.All you need is petri dishes,sugar ,jelly and a chicken cube.Mix them and fill the petri dishes with the jelly.Once is cold enough open dishes and get them in touch each on seperate places of your enviroment. Leav them aside and one week later different bacteria will fill each petri dish.

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Light energy is essential for photosynthesis. Is the color of the bright light important? For this we observed that the same kinds of plants we placed in closed boxes grow by keeping them under different colored lights.

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A suggestion I thought of because my students are young would be cleaning the silver. Used Mares: salt, toothbrush, baking powder, vinegar and wine. Students divided into 5 teams will clean the silver with two of the ingredients given and at the end they will see which has cleaned better.

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Yes its a briliant experiment.Clasic, simple and giving clearly answers.
My propouse
how to make a Galileo thermometer?
We can use diferent metals, tube of glass, wather  or  diferent liquid.
How to make a lava lamp?
we have to take oli , wather, backing soda, food dyes.

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Extraction of DNA from onion.
Materials and equipment simple and easy to get.
Manual food processor, glass cup, wooden stick.
Onion, pineapple juice, ethanol, salt (NaCl), distilled water, liquid dishwashing liquid, filter paper (for coffee).

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How to clean silver jewelry?
They can use the available products or an electrochemical reduction method.
the thing you need are hot water, vinegar, baking soda and aluminum foil.

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"Float or sink - that is the question!"
The students organized in teams will use the principles of buoyancy to investigate how mass, gravity, volume and density is related to the buoyant force of an solid object floating in liquids. They will perform two real lab activities which investigates the fundamental physics behind pressure in fluids, buoyancy forces, and Archimedes’ principle.

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Test of the influence of water hardness on the action of different detergents, including soap. The simplest observations to make could be the amount or permanence of the foam, or wettability of an oiled surface, but students could propose other ones.

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I have experimented that in the soil there is air used by an experiment by which water was drained into the test tube, the oxygen rising in the form of bubbles.

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We can design a simple acid base indicator experiment.

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Mars Race. Students are challenge to create a space travel to Mars. They have to build a rocket(propel from a mix of water and air), that carries na astronauta(an egg) and he must land safe. Aplications of Newton Laws, drag force, parachutes, collisions. And everything made with recycled 2L soda bottles, garbage bags, cotton and an raw egg.

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Use glassese or glass of water to explain main optic laws in physics

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Every year with my students we grow seed of lentils and beans splitted in two parallel experiments to dimonstrate the influence of ligth on chlorophyll production. A half of seeds were grown in a locker to see also phototrophism.

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You can create an electrical cell. You need copper and aluminium sheets , salty water, two wires. You can use this cell as a source of power to you pocket dictionary. It will take you about 10 minutes to conduct this experiment.

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This year I find myself  in a school with a vegetable garden. We clean wild plants in October so I though we could observe them to understand something about the soil of our orchard. It’s a year activities started in autumn, and ending in choosing how better manage the soil and what plant on in spring. That because my students need to developed some knowledge about acidity.
I have a kind of lesson plan but in italian.

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I have at my disposal a lot of old light sensitive paper which still is good enough to experiment. It will help students understand which factors influence the right exposure of the paper to get a good picture.

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using red cabbage extract (or even water) as pH indicator - can fit event the smallest kids and is really nice to see colour changes

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I can give the following example. It is suitable for younger  students studying levers. I pose a problem - how much does a euro coin weigh? They can use everything they have around them. The pupils construct a straight-line lever, balanced on a pencil or other objec At one end students put the coin. At the other end, they have to put an object of some weight. If they do not know this it can be chewing gum or candy. On the chewing gum package the weight of each dragee is written. It can be broken and adjusted while balancing the coin.

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chickpeas, wheat and bean seeds like ,
we did an experiment on generating electricity.

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Discover the density by weighing cubes of the same length side but with different masses.

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Crazy dough made with corn flour and water to explore viscosity and non Newtonian fluids.

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examining th link between hard water and the amount of dissolved substances in the water.

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A very easy activity to extract colours from tissue paper. All that students need is: some pieces of tissue paper, plastic cups and water

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Since we have a good deal of rainfall in the monsoons a good Inquiry based learning can be initiated on finding out the acid content in the rain in a city like Mumbai.
The pH value of rain water can be measured over 3 to 4 days(with a pH meter) and learners could discuss on the possible causes of acid rain in cities.

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An interesting activity is studying the quality of the water after crossing through different type of soils, with or without vegetation. You only need plastic bottles to contain the soil. You can collect the soil from any place. In that you should sow previously some frecuent seeds. That first process is part of another activity.

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Researches of density and concentrate

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What i appreciate more in this experiment is that it extends the conclusions of the experiment to taking action about the environment. An experiment with simple every day resources can be used to form an iquiry situation is the pH determination, where an indicator from red cabbage is prepared.

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nabeul , Tunisia
Recently I realized with my students the experience of chlorophyll extraction in the study of the role of light and chlorophyll in photosynthesis

Recall

• Conditions of photosynthesis

CO2. chlorophyll, light

• Origin of photosynthesis products

oxygen, and organic matter (starch)

Problematic:

how to highlight the role of light and chlorophyll in photosynthesis how to extract chlorophyll

materials supplied: for the phase of chlorophyll extraction

Boletus leaves, sand, calcium bicarbonate, alcohol (detergent), water, soda, dilute hydrochloric acid, potash, mushrooms, acetone, porcelain mortar, filter paper, Meyer funnel erlen,

Hypotheses

Students propose hypotheses about the material to be used to extract chlorophyll

Approach and experimentation

Divide the students into groups, where each group is responsible for reflecting on the various hypotheses elucidated from a documentation provided explaining the usefulness of each product provided in the list of materials

After analyzing the documentation, the students discuss the various hypotheses with each other until they adopt the most logical hypothesis.

Verification of the hypothesis from the experiment, the extraction of chlorophyll was carried out and the conclusion reached on the procedure of the extraction of chlorophyll

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A very nice and simple experience is to illustrate the properties of soap and the effect on water...

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Hi everyone, recently i used to make one inquiry laboratory with a few materials. It was about Evolution, and we just need small puzzles with different colors and we analized the differences between environment and different species.

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I believe that the workshop activities are interesting and motivating to stimulate curiosity and motivate the study of scientific disciplines, explaining that they can experiment using equipment and materials that are in the environment around us.

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Extracting colors from green leaves. All you need are different kinds of leaves, nail polish and filter paper (or paper filter for coffee).

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Another simple experiment would be to investigate the difference between essential oils and plant lipids. Lipids contained in avocado or nuts will leave permanent fat stains on filter paper, whereas essential oils contained in orange peel, lemon peel or caraway applied to filter paper will yield a stain that resembels the stain created by a lipid at first. However, the stain created by the essential oil will soon disappear through evaporation, in contrast to the stain created by lipids, since lipids have a high boiling point.

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It is one of more useful experiments for everyone, especially for students.

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I think that the activities are very interesting and motivating from an experimental point of view in which students can achieve good results and succeed in learning

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Both the given examples are situation connected to the students' life and involving their health. The second experiments starts from a real situation and can take positive advantages to their environment. Students are always very interested in problems about health, environment, pollution...
The model used by the teacher is the 5E (Engage, Explore, Explain, Elaborate, Evaluate), that can be apply form the early years in an enquiry-based mod

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An experiment with easily accessible materials is showing diffusion with the help of tea bags. One tea bag is put in a glass of cold water and the other one in a glass of hot water.   The pupils could discuss afterwards why the distribution of the tea is a lot faster in the warmer water. They will learn about the Maxwell–Boltzmann distribution from an observation they often made before.

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Very interesting and usefull for teachers and students.

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Use simple materials at home like glass, spoon, window pane, water and sunlight to study dispersion of light and aspects of refraction like critical angle and total internal reflection.

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This year I investigated with my Primary school students the air and its main caracteristics. Among the different experiment, they were shocked to discover that a White bed street became so dirty if put in the open air for some weeks

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Investigating the importance of Baking soda.
Students are given baking soda and asked to add it in cake batter and then allow it to stand. The students will come up with conclusions of what are the importance of baking soda.

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I think it is very useful and enjoyable for pupils to plan experiments using materials that are readily available at home or in the nearby environment.

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PH determination
Materials required
Red cabbage - about a quarter of a small cabbage
4 glasses (we used plastic)
The water
A saucepan
Sodium bicarbonate - one teaspoon
Vinegar - 2 tablespoons

1. Cut small cabbage (as for salad) Children activities scientific experiment fun ph-red cabbage
2. Put the cabbage in a saucepan, pour water over it and boil. Alternatively, you can pour hot water over the cabbage so that the water turns violet.
3. Drain the liquid in a glass. We'll need it for the experiment.
4. In a glass, pour water (about half). In another, pour water and add a teaspoon of sodium bicarbonate. In the third glass, add two tablespoons of vinegar.
the third glass, add two tablespoons of vinegar.
5. Pour a little cup of cabbage into each glass (with water, vinegar and bicarbonate) and notice what's going on!
6. You will see that the plain water was colored in purple, the vinegar water turned pink and the bicarbonate water became greenish!

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investigate how detergents affect  surface tension of water

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Because my students are young (primary education) I have done the experiment of the volcano.
Materials:
- A small container
- Sodium bicarbonate
- Red food coloring
- Vinegar
- Plasticine

We build a volcano and put into the small container. We pour vinegar and add sodium bicarbonate. And... the volcano erupts. Children like it a lot!

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Investigate the effect of different hair treatments on the tensile strength of hair

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Is a permanent challenge for me as Physicist to plan experiments using materials easily available in own home or in the nearby environment.

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I have tried some experiments about volume and temperatre, just with rubbers, bottles and ballons.

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I would like to try experiments concerning seed germination; to make the pupils discover the germination conditions; Another idea would be to investigate how plants move.
or what do plants need to feed on?
Last year we did DNA extraction:

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Recently I did an experiment on "Isolation". For this only a few resources were needed. The task of the students, was to find out what happens when you put a coat on a snowman standing in the sun. Does it melt faster, slower or does it make any difference? To test this the students were given a piece of cloth, ice cubs and a lamp. In the end the students realized that the ice cube in the piece of cloth melted lee quickly and so they realized how insulators work.

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Research on the electrical conductivity of solutions of salt, sugar, alcohol, acids and everyday life principles.

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Another idea for an inquiry-based activity that the students can do with minimal resources is an investigation about the ‘Conditions required for the growth of mould’. For the discussion and planning stage of the activity I have lately changed the way I pass on guidelines to the students and turned it more into an inquiry-based activity. The instructions are attached here. I give ‘Problem Card 1’ first and will only give ‘Problem Card 2’ and eventually ‘Problem Card 3’ as extra help to the groups that need extra help to keep their discussion going.

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I remember an experiment in which we have proposed to measure water retention capacity by various types of soils. The investigation protocol consisted in measuring the length of the drainage process of a given quantity of water through a given type of soil. For this, we put a sample of soil in a flower bush, above a graduated vessel. We poured 100 ml of water and waited for it to accumulate in the graduated vessel. We measured the length of the process and measured how much water was recovered in the graduated vessel to find out how much water the ground sample retained.

In another experiment, we want to find out how the state of the soil influences its ability to retain water. For this, I sprayed three samples of sand like this: the first sample was wet sand, the second was from terraced sand, and the third was from the sand on which the grasshopper sowed a while before. I found that in the first case the water flows smoothly and then quickly. In the second case, the water flows smoothly, without spreading the sand too much, and in the third case the sand does not scatter at all.

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I designed such an experiment. Based on the racing of colors, I handed out one piece of rectangular paper to all the students. I asked them how they can test which color of paper is which one likes the colony. everybody gave me a beaker, some paint pencils. they managed to work after a while when they failed in the first few studies.

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Consider the experiment in this section. It contains simple and easy to access ingredients, it can be easily implemented in the classroom and it connects scientific knowledge with real life situations. Can you think of any other similar exercises where, with minimum of resources, students can benefit from a full inquiry situation? Post your proposals below!

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I remember planting bean seeds in different soils, at different temperatures, different amount of water, air... An experiment I remember from my very young school days :)

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I remembered the experiment that can be done with pre-school children, how to make ice cream without the use of a freezer, so that we use the power of salt. Put a spoon of chocolate, a spoon of cream and two tablespoons of milk in a glass jar and mix well. Place the glass in the bowl between the ice cubes that we have salted. We load more ice cubes around the glass and salt is poured over them. We cover the kitchen cloth completely so that the bowl does not penetrate the heat from the outside. Let it rest for one hour and check that the mixture in the glass has solidified. This creates a real ice cream.

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Great experience, nice activities! Thxxx for sharing! Here's our practice! Enjoy! :)
https://www.thinglink.com/scene/983835483509358594

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Can you think of any other similar exercises where, with minimum of resources, students can benefit from a full inquiry situation? Post your proposals below!

Last semester we did an experiment with our high school students to test the influence of heat and acid in the activity of the enzyme catalase. Materials included pieces of beef liver, vinegar, a water boiler, some H₂O₂ and test tubes.  Each group of students had to find out the effect low pH and high temperature on the activity of catalase that is found in the liver. The experiment is very simple, the materials are very cheap and the results of catalase activity of the fresh liver in the breakdown of H₂O₂  is quite a sight.

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This is something I intend to put into practice with my older students: a research of the effect of aspirin on dissolving blood clots. Students could make hypothesis about the influence of variables such as temperature, Aspirin dose, clot size … They could use water, straws and butter as a model of the circulatory system

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Last year we did an experiment to study how different factors influence the growing rate of different seads.

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Also, an investigation into whether Leonardo Davince's theory holds that the height of a man is equal to the opening of his hands. An experiment I do every year in my ranks.

You have to forgive me that the worksheets are not translated, but I do not have time to do it. Good luck to everyone.

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Only 3 days ago I took part in an experiment with 815 other schools. This experiment had to do with the calculation of the circumference and the radius of the Earth, it is the so-called experiment of Eratosthenes.

The question was, "Can you calculate the length of the Earth's periphery from your school yard without having to travel?"

The experiment must be performed on a specific date when we have equinox above the equator. We will need simple materials such as an object that should be perpendicular to the surface of the ground, a tape measure and a protractor. It is not an expensive IBL method but with little effort can be done.
You have to forgive me that the worksheets are not translated, but I do not have time to do it. Good luck to everyone.

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Οδηγός Ερατοσθένη - Φύλλο εργασίας Ι.pdf

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I participated with the science colleague in an experiment to extract the DNA from the banana. Also in this case materials easily available by the pupils were used. The activity was also carried out in the laboratory with the tutoring of older pupils. The students were divided into small groups and were active protagonists of the experiment. At the end they made an experimental card describing the various phases synthetically.

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DNA banana
I carried out, in collaboration with my religious colleague, a simple experiment to extract the DNA from the banana. Also in this case materials easily available by the boys were used. The activity was also carried out in the laboratory with the tutoring of older children. The students were divided into small groups and were active protagonists of the research. At the end they drafted an experimental sheet with a brief description of the various phases.

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Toothpaste Experiment With Eggs and vinegar.

This experiment is designed to show how fluoride protects the calcium in eggshells against the softening effects of acid.
Fluoridated toothpaste is used to coat part of an egg, which is then soaked in vinegar for 24 hours.
The vinegar will soften the toothpaste-free part of the egg shell, while the part covered by toothpaste remains hard. The action of the vinegar on the eggshell parallels the action of acid-forming sugars and bacteria on unprotected tooth enamel.
https://sciencing.com/toothpaste-experiment-eggs-7785251.html
Experiment with eggs, Coke and vinegar
We can observe how Coke coloured the eggs and how vinegar is harmful for the egg shell (that has similar composition to enamel)
https://www.youtube.com/watch?v=ndtNy3Z0Bko

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Biodegradable or not biodegradable

·         Teacher ask students:”What of these substances are biodegradable? ( substances are apple, piece of glass, a plastic object, a rock, a banana, a cigarette-end, a piece of meat)

·         Students discuss about the question.

·         Then teacher divide them in some groups ( 4 students per group) and ask them to formulate an hypotesis and then a protocol to verify it.

·         Materials are: apple, piece of glass, a plastic object, a rock, a banana, a cigarette-end, a piece of meat, medium vases, soil, tea-spoon

·         After experimentation students of every group analize results and draw conclusion.

·         Then students of each groups prepare a wall poster and a student of each group explains his group's work to the class.

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pH water checking from snow, Balticdolls sea, a lake and from a crane.

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My proposal is to make a natural pH indicators: extract of coloured fruit and vegetables such as red cabbage or blueberries and test the different solutions with it.

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Investigation of germinating seed in different conditions.

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2.5_Activity
Can you think of any other similar exercises where, with minimum of resources, students can benefit from a full inquiry situation?
Answer: pdf
Control test: clean water

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I think this activity, not only point on enzymatic  activity but also on environmental education. So It is really interesting!!
In this contest, maybe I use "old" experiments. I work with amylase and catalase...I am doing this just this week.

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Michael, Ireland. We are told that certain shampoos strengthen your hair. Provide students with shampoo, samples of donated hair and some weights or spring balances. Students could devise an experiment to  test strength of untreated hair compared to washed hair. Nice music in the video by the way. 

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Michael, Ireland. We are told that certain shampoos strengthen your hair. Provide students with shampoo, samples of donated hair and some weights or spring balances. Students could devise an experiment to  test strength of untreated hair compared to washed hair. Nice music in the video by the way. 

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It links scientific knowledge to real life situations. It contains simple ingredients that can be obtained from each store.
Students could use the refractometer to determine the content of sugars in different drinks.

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Influence of various factors (temperature, table salt, vinegar - acid, base, alcohol) on egg protein.
Checking density of diferent subject (liquid, subject in the shape of a cube, subject without specific shape for example key)

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A very easy activity is measuring pH in different foods, drinks, and cleaning products found at home. Another one is extracting the DNA from a banana. Also observing different conditions that, for example, a bean plant needs to grow.

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A very easy way for verifying enzymes is an experiment with a banana peel. You heat water and split the peel into two smaller pieces. Then you cook one piece for about 20 seconds and the other one for 1 minute. Most of the time the pupils are surprised why the one-minute-cooked don’t get as brown as the 20-seconds-cooked. This is because after a few seconds you destroy the cell membrane and phenol and phenol-oxidase meet and react together. After cooking the peel for 1 minute you destroy the cell membrane, but also the enzymes, so that the reaction can’t take place and the peel doesn’t get as brown as the peel you’ve cooked for only a few seconds. This also explains why apples or potatoes get brown after cutting.

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The simplest experiment is Measuring pH with Litmus Paper. When you want to determine the acidity or alkalinity of a liquid or water-soluble gas, the easiest way is to perform a litmus test.

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In my school almost every year we (teacher and students together) plant vegetables such tomatoes, peppers and others. Last year we did the following experiment with children in first grade. We plant those vegetbles and separated them in three groups: those which were put in a sunny place and watered properly, those which they were put in a non sunny place but watered properly and the ones that were put in a non sunny place and watered irregularly. Children every two three days wrote down their findings and saw how usuful sun and water is for plants

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1. wpływ temperatury na działanie enzymów (odczynniki: woda utleniona 3%, drożdże, wątróbka kurza, zimna woda, letnia woda, wrzątek)
2. wpływ różnych czynników na szybkość korozji (odczynniki: stalowe gwoździe, woda, sól, olej, ocet, itp.)
3. wpływ dwutlenku węgla na wzrost efektu cieplarnianego (naczynia szklane, jedno wypełnione powietrzem, drugie CO2, termometry, żarówka)

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Two containers with water and acuatic plants.Oil is added to one of the containers and we check the effect of the oil on the plant.
We check the contamination produced by the oil