Year 4 Design and Technologies | Fun Learning Quest for Kids

When your school uniform is designed, the fabric choice must balance comfort, durability, and ease of care. Which of the following best explains why a blend of cotton and polyester is often used in school polo shirts?

You are asked to design a reusable shopping bag that is strong enough to carry heavy groceries but also washable. Which fiber choice would best meet these needs?

In a mechanical system like a bicycle, you push the pedals (input), the chain and gears transfer the force (process), and the wheels rotate (output). If the chain becomes rusty and stiff, what part of the system is most directly affected?