Materials
Properties
Discussion
100
This material is transparent and is used for windows, tables, and cups.
Glass
100
Something that costs a lot of money.
Expensive
100
Why are windows made from glass?
Glass is transparent, so we can see through it. It is also rigid and strong, so it is great for buildings.
200
Leather
200
Describe the properties of this hammer.
It is strong and rigid.
200
Why don't we make golden nails or diamond hammers? Gold is a metal, and diamonds are harder than iron.
Gold and diamonds are too expensive!
300
You can find this material in Plaza de España 
Ceramic
300
What are some properties you want for a bathroom door?
Opaque, strong, rigid, and cheap.
300
Why are wooden shoes a bad idea?/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/1c/25/1c25dff1-03f2-4a64-8ef3-70721c533ca0/istock-177415966.jpg)
They are hard and rigid. Your feet would hurt!
Shoes made from fabric and leather are more comfortable.
400
Name 3 materials you can make clothes with.
Leather, cotton, wool, polyester, and nylon.
400
What properties does a good umbrella have?
Waterproof, hard-wearing (durable), and strong.
400
Why are swimming suits NOT made from cotton or wool?
Cotton and wool are not water resistant or water proof. It would be very uncomfortable to always be wet!
500
Name 4 materials you can find in a car.
Glass, plastic, metal, leather, fabric, and rubber.
500
Why are these bands good for exercise? Why can't I use a towel instead?
The exercise bands are elastic and create tension.
500
Why are there paper, plastic, and metal straws? Discuss the properties of each material in your answer.
Paper straws - they are cheap, flexible, and weak. They only last as long as your drink, so they are good for the planet.
Plastic straws - they are cheap, flexible, and strong, but they aren't good for the planet.
Metal straws - they are expensive, rigid, and strong. They can be used many times.