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Chemistry lesson using the equipment bought with the Erasmus+ support (Lubsko, Poland)

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Chemistry lesson using the equipment bought with the Erasmus+ support (Lubsko, Poland)

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Magnet Features - The Good Bulgarian Practice

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Magnet Features - The Good Bulgarian Practice

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For the experience we are using sulfuric powder and iron powder. We are mixing the two substances all together. What we see is that the iron is attracted by the magnet. This is a way of separating a mixture.

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Magnet Features - The Good Practice from Bulgaria

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Magnet Features - The Good Practice from Bulgaria

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Our students showed how to get orientated with the help of handmade compass.  When the needle is magnetised, it is positively charged, meaning it is attracted to a negative and repulsed by positive magnetic fields. The tip of the needle is polarized and is pointing point towards the strongest magnetic pole, meaning north in the Northern Hemisphere and south in the Southern Hemisphere.

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This experiment shows that it is possible to modify the force of gravity, since the air pressure outside the glass is greater than the pressure of the water inside it.

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Kamila's work

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The Greek good practice in the chemistry lesson in Lubsko - THE AIR

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The Greek good practice in the chemistry lesson in Lubsko - THE AIR

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Put a lit candle on a stand and cover it with a flask or a large jar.

We observed that the candle went out after a while.

Conclusion

The oxygen is necessary to sustain the burning process.

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The Greek good practice in the chemistry lesson in Lubsko - THE AIR

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The Greek good practice in the chemistry lesson in Lubsko - THE AIR

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We put on fire some paper soaked in alcohol into a tall glass bottle.
Then we put the boiled and peeled egg on the neck of the bottle.
The egg was sucked inside the bottle.
Conclusion:
lit paper thrown into a bottle burns out, heats the air and uses up oxygen. An egg placed on the neck of the bottle acts like a valve - it closes the access of air from the outside.
Then the air in the bottle starts to cool down, so the pressure goes down.
Atmospheric pressure (greater on the outside of the bottle) presses the egg and pushes it inside. Once the egg has fallen into the bottle, the pressure outside and inside the bottle will equalize.

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The consumption of salt and sugar
We all know the sweet taste of sugar and how it makes us feel good. But we actually don’t know that sugar is addictive.
The high intake of salt and sugar lead to high blood pressure, imbalanced cholesterol, diabetes, obesity or excessive weight gain.
However, good sugars are otherwise required by our body to function normally and regularly.
We advise you to replace the added sugar and salt with fruits and vegetables.

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The Bulgarian good practice in Greece

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The magnet made by Ola

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by Tomek

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by Dominika

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Topic:

Air and what's interesting about it
During this workshop, the students performed an experiment that allowed them to see and even hear the air.
1.They made a trick with a dry handkerchief, which was dry, even after being submerged under water,  due to the presence of air.
2.They found that a candle needs air to burn - or more precisely, one of its element = oxygen.
3.They conducted an experiment that showed them how much oxygen was in a glass vessel - a flask.
(on a plate filled with water, they put a candle, lit a candle and covered it with a glass flask,
after some time, water began to flow into the flask, the candle went up and went out)
The experience with the butt confirmed our knowledge of the composition of the air.
There is 20% oxygen in a given vessel, because the water has flowed to 1/5 of the vessel's height)
4.In another experiment, the students, using simple food ingredients (water, baking soda and citric acid), conducted a chemical reaction that produced carbon dioxide.The carbon dioxide escaping from the flask extinguished the candle.
5.At the end of the workshop, we conducted an experiment using Bernoulli's law.Thanks to which we were able to inflate a 3-meter bag with just one blow.

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The Bulgarian good practice - the workshop

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The Bulgarian good practice - the workshop

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Topic:Following the magnetic force.During these workshops, students performed a series of experiments:
- they found out what a magnet is and what qualities it has
- they learned what they are and what shape the magnetic field force lines take
- they found that the Earth is one big magnet
- they found out which substances are magnetic and which are not
- they found out what the coins are made of and why the new coins are magnetic,
- found out what ferromagnetic materials are and what their properties are
- they magnetized a ferromagnetic nail
- they made their own compass

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How much sugar is it?

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Greek students proving that air is everywhere around us!

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Greek students proving that air is everywhere around us!

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1ο Γυμνάσιο Χρυσούπολης

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Ο ΑΕΡΑΣ ΕΙΝΑΙ ΠΑΝΤΟΥ ΓΥΡΩ ΜΑΣ

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Learning about the Topic “Density”, the students followed an example of good practice suggested by greek teachers “does air weight?’’, within Erasmus+ project “power of discovery”. At the start of the project students put forward a hypothesis : the air has no mass. To prove the truth of the proposed hypothesis, students did an experiment with ballons.

·        Weighed an empty balloon,

·        inflated the balloon,

·        Weighed inflated balloon

·        Came to conclutions, that the masses of the ballon has changed,

·        Compared the obtained results with classmates, to make sure, wether the Conclusion is the same as other classmates,

·        Together concluded, that the hyipothesis was wrong.

One of the students concluded: if i breath in, I'm weighting more.

For example if i exhale i weight 53 kg, if i  inhale – 55 kg. Is it possible? The students looked for answers to the questions by calculating the volume of 2 kg of air, taking into account air density. Conclusions: A person cannot inhale 2 kg of air because its volume is about 2 cubic meters.

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Students identified nutrients in foods and created a video of their work.

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We were making a compass. First we watched the instruction.

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Eksperyment #1 Jak zrobić kompas (how to make a compass) (eksperymenty dla dzieci)

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While we were working on the method we were watching the film

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Korozja #5 [ Powietrze i jego składniki ]

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We watched the film to work on the air topic suggested by the Greek school.

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Powietrze #1 [ Powietrze i jego składniki ]

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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The Polish good practice carried out in Lubsko

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Getting ready for the good practice. Lubsko, Poland 

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Getting ready for the good practice. Lubsko, Poland 