Science 3rd grade | UNIT 5: Investigating materials 5.3 Uses of materials
Every material has properties. The properties make a material good for making some objects but not for others.
Here are some common materials, what they are used for, and the properties they have.
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Sensible and silly materials
Metal is a sensible material for a pan because of its properties. What would happen if the pan was made of wood?
Here are some other objects made from silly materials.
Activity 5.3 (Why is that material useful?)
You will need: objects in the classroom that are made of only one material
Find objects in the classroom that are made of only one material.
Talk about why each object is made of that material.
On a large sheet of paper, draw a table like this. Write each observation you make in the table.
| Useful properties of that material | Material | Object |
| .Strong so it does not break .Flexible to make it comfy .Light so it is easy to move |
plastic |
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Questions
1) Which material would be good for making sunglasses? Why?
2) A long time ago, knights used to wear metal armour. Why is metal not used for clothes?
