Newspaper and 100s blocks

This task is about estimation and measurement of area.
Instructions

a)
Look at the four shapes cut out of newspaper and the 100's blocks.
How many of these pieces of paper will take the same number of 100's blocks to cover them? Circle the answer you think is best.
(A)   All of them.
(B)   Three of them.
(C)   Two of them.
(D)   None of them.

b)
Why do you think that?

c)
Place the blocks on the pieces of paper, letting the children discover they all can fit the same number of blocks. Then ask:
Why is it that all the pieces of paper fit the same number of blocks when the pieces of paper are all different shapes?
Student form
Name ______________________
a)
(A)   All of them.
(B)   Three of them.
(C)   Two of them.
(D)   None of them.
 
b)
 
 
 

c)
 
 
 
 
 
Student form
Name ______________________
a)
(A)    All of them.
(B)    Three of them.
(C)    Two of them.
(D)    None of them.
 
b)
 
 
 

c)