# data[].attributes.body
Wind up the propeller to store energy on the rubber, then release it to let the car go. The more times you wind the propeller, the more energy you store, the farther the car will go.

STEM Learning Opportunities:
1. Science - (Energy) The more energy, the farther the car will go. (Forces) How friction and air resistance resistance affect its motion.

2. Technology - Using the internet to find info about propeller cars.  The use of 3-printer in making a prototype.

3. Engineering - Designing, planning, and building the propeller car.

4. Mathematics - Measurements of the car's wheels, body, etc. Calculations of how often you have to wind up the rubber band for the car to run in a straight path.

# data[].attributes.body
STEM Push and Pull Toy Engineering Design Challenge relates to the Physical Sciences and Design and Technologies. The focus of this task is to design a product for the technologies context engineering principles and systems. A push or a pull affects how an object moves or changes shape.  Students identify toys that use the forces of push and/or pull. To make a push and pull toy students use recycled materials such as an empty plastic water bottle, plastic straws,  plastic bottle caps, balloon, rubber band, paper clip and string. Students create and design. They communicate their idea and draw and label their design. A push toy moves when you apply a force by pushing it in a particular direction. A pull toy moves when you apply a force by pulling it along behind you.

# data[].attributes.body
Abacus

The traditional method involves using the abacus for addition, subtraction, multiplication, and even division. Each bead represents a specific number value, and the placement of the bead determines its value

What STEM learning opportunities does this toy present?

Mathematics: The primary function of an abacus is to teach math. Children can learn basic arithmetic operations like addition, subtraction, multiplication, and division. The visual and tactile nature of the beads helps reinforce mathematical concepts and enhances number sense.

Engineering: Understanding the mechanics of how the abacus works, including the movement of beads and the stability of the frame, provides a basic introduction to mechanical engineering principles.

Science: Children can explore concepts of grouping, sorting, and sequencing using the abacus, which are foundational concepts in many scientific disciplines.

Technology: The abacus, though an ancient device, is a precursor to modern computing technology. It serves as a tangible example of how humans have used tools to aid in calculation and data processing over the millennia.

# data[].attributes.body
How does it work?

This boat is made from a plastic bottle, some strings and rubber bands to hold pieces together, a pair of stick was attached to the sides for balance. A popsicle stick was used as the propeller.

STEM Opportunities:
-application of Archimedes' principle.
-materials science
-motion
-speed

# data[].attributes.body
Young boys often make their own “tiradors” or slinghots using good and sturdy branches that they pick up from grounds or cut from trees with the help of their elders. The rubber bands vary with whatever material is available and can be combined with leather, as seen in the picture. The slingshots are used to target cans from different distances or used to target fruits from trees.
Several STEM concepts are involved from the making of the slingshot, like the materials used and their size or length (branches, rubber band), to how the slingshot is aimed to maximise the horizontal distance travelled by the stone or pambato to hit the target.

# data[].attributes.body
A luthang is composed of two components - a longer hollow bamboo segment and a plunger.

To operate, plug into the longer bamboo segment a wet ball of paper the size of the hole of the segment and push it into the desired depth into the segment with the plunger before launching.

STEM topics:
- projectile motion
- force
- pressure
- Newton's 3rd law
- material science
Etc

# data[].attributes.body
It spins back and forth as the string untangles. The user pulls the string back and forth to give the spinning-cap a momentum to keep it in motion. This toy allow the students to understand angular momentum, centripetal force and inertia. The technology involved could be the material used for the string. Engineering design skills is also evident as the student tries to construct a good spinner that can cut through the opponents string faster. Mathematics is also involved in the construction as they work out on the most effetive length of the string for the spinner.

# data[].attributes.body
It works by launching a plane with an initial thrust at an angle. It does more on fluid mechanics and projectile motion. A type of paper might also be considered to create a plane, the size of its flap, and its design.

-Ken

# data[].attributes.body
In our case it’s a small “rubber” wagon as the body is from an old slipper, and the wheels are sometimes from cans or caps or old slippers (cut out in the shape of a circle)…and we used it to carry around some toys or just pull it around. STEM topics: friction, design process

# data[].attributes.body
I live in a place with a lot of coconut trees so we made a lot of toys from coconut leaves and its other parts. One of the toys we made are coconut balls. STEM learning opportunities for this would be design thinking - how do you make the pattern such that it can turn into a ball (or a cube - with soft edges). In terms of mathematics, they can make use of the two to measure distance between two points (with the balls as the points, being thrown in a cartesian plane), since this ball is cube-ish, they can also turn it into dice, number them and perform probability games. Throwing the ball can also be done to help students understand the concept of gravity in science.

# data[].attributes.body
1. Takyan (bisaya)/ sipa (tagalog)

2. see above

3.The Sipa is thrown upwards for the player toss using only the leg, particularly the area from the foot until above the knee; the player must prevent the Sipa touching the ground by hitting it several times. Each hit is counted; the player kicking the Sipa most wins the game.

4. Science - aerodynamics, weight, free fall, force, kinesthetic

Technology - materials such as washer (weights), candy wrapper/straw

Engineering - design of the toy / selection of materials / ways to do it: https://www.wikihow.com/Play-and-Make-Improvised-Sipa-%28Kick%29

Mathematics - dimension, variable relationships (intuitive), scoring system

# data[].attributes.body
I have a vivid memory of this toy because I made it when I was in Grade 1. The string telephone only uses a string and paper cups (or tin cans). This toy can be an opportunity to explore the mechanism of sound transmission and the factors affecting it.

-Joni