The Balanced Diet Wheel Working Model is a simple and attractive science project that helps students understand the importance of different food groups in a healthy diet. This model is made using easily available craft materials and a rotating wheel mechanism.
Materials Required
- Thick cardboard or foam board
- Colored chart papers or acrylic paints
- Printed pictures of food items
- Scissors and cutter
- Glue or hot glue gun
- Wooden stick, skewer, or metal rod for the axle
- Compass and ruler
- Black and white chart paper for the base and background
- Decorative tape or colored strips
- Marker pens
Procedure
First, take a large piece of cardboard and cut a circle of about 25–30 cm diameter. Using a ruler and compass, divide the circle into five sections representing different food groups: fruits and vegetables, carbohydrates, proteins, dairy products, and fats/sugars. Paint each section in different colors or cover them with colored paper to make the wheel visually appealing.
Next, collect and paste pictures of foods in their respective sections. For example, place fruits and vegetables in the green section, rice and bread in the carbohydrate section, fish and eggs in the protein section, milk products in the dairy section, and sweets in the fats and sugars section. Label each section clearly.
To create the rotating mechanism, make a small hole at the center of the wheel. Fix the wheel onto a cardboard stand using a wooden stick or metal rod so that it can rotate freely. Ensure that the wheel is balanced and moves smoothly.
Prepare a sturdy rectangular base using thick cardboard. Cover the base with black chart paper and attach the wheel stand firmly at the center. Add decorative colored strips to enhance the appearance. A separate arrow indicator can be made from cardboard and fixed near the wheel to point at different food groups as the wheel rotates.
Finally, create a title label reading “Balanced Diet Wheel Working Model” and paste it on the front of the base. Place a black background sheet behind the model to improve visibility during exhibitions.
This working model demonstrates how different food groups contribute to a balanced diet. By rotating the wheel, students can easily explain the role of each nutrient group and understand the importance of consuming a variety of foods for good health and proper body development.