1. Lesson 55 Cut, Sand, Fold: Changing Solids Day 1
SCIE_2_A_Les55Cut,Fold,Sand_MAT CFISD

2. Explain 1

3. Cutting, folding, bending, and sanding can change matter.
You can fold paper.
You can cut it into pieces.
You can bend a paperclip.
You can sand wood.
Explain 2
changes the size and shape of paper
changes the size and shape of paperclip
changes the texture of the wood by making it smoother,
it may also change the color of the wood

4. Chewing causes a physical change in matter.
Explain 3
Chewing causes a physical change in matter.
You break food into smaller pieces when you chew.
Chewing changes the size and shape of the food. Chewing does not change the food into a different
kind of matter.

5. Cutting causes a physical change in matter.
Explain 4
Cutting causes a physical change in matter.
Cutting and tearing are physical changes.
They change the size and shape of objects.
When you cut paper, you change the size and shape of the paper.
It is still paper when you are done.

6. Sanding causes a physical change in matter.
Explain 5
Sanding causes a physical change in matter.
Sanding is also a physical change.
You change the smoothness of wood when you sand it.
Sanding does not change the wood into a different material.
You still have wood.

7. You do not change the paper into a different kind of matter.
Explain 6
You do not change the paper into a different kind of matter.
You change the size and shape of the paper.

8. Physical Changes and Mass
Explain 7
Physical Changes and Mass
Record the mass of the solid before the physical change.
Change the solid by cutting, folding, bending, or sanding.
Record the mass of the solid after the physical change.
MASS
Before Physical After Physical
Change Change
How did you change the cracker?
cut fold bend sand
Did the amount of matter change?
yes no
Is it still a cracker?
MASS
Before Physical After Physical
Change Change
How did you change the clay?
cut fold bend sand
Did the amount of matter change?
yes no
Is it still a clay?
MASS
Before Physical After Physical
Change Change
How did you change the craft stick?
cut fold bend sand
Did the amount of matter change?
yes no
Is it still a craft stick?
MASS
Before Physical After Physical
Change Change
How did you change the crayon?
cut fold bend sand
Did the amount of matter change?
yes no
Is it still a crayon?

9. Lesson 55 Cut, Sand, Fold: Changing Solids Day 2

10. Design A Presentation Checklist
Elaborate
Design A Presentation Checklist
Create a Presentation with your table group.
Your presentation must explain how matter is changed when it is cut, folded, or sanded.
It will be presented to the class with a product that is made from materials that have been cut, folded, bent, or sanded.
List any items other than paper and craft sticks that you use in the chart.
Place a check under the physical change that you made to your items.
Answer the questions below the chart with your group.
Item
Cutting
Folding
Bending
Sanding
Paper
Craft Sticks
Other
After you cut the paper, do you still have paper? Yes No
What physical property of the paper did you change? shape size color
After you sanded the wood, do you still have wood? Yes No
What physical property of the wood did you change? shape size color

11. Cutting Sanding Folding
Evaluate
Use the words in the word bank to complete the chart.
Tell which properties are changed by each action.
The words can be used more than once.
color shape size texture solid liquid
Cutting
Sanding
Folding
If you cut a piece of paper, is it still paper? Yes No
Explain your answer_______________________________________________________
_______________________________________________________________________
What about the paper did you change?