Sunday, April 7, 2013

Fractions!

We have been investigating fractions! First, we folded some paper into fourths. We all had different ways of folding our papers into four equal parts, so the question was: 

"Someone folded the paper into four squares, someone else folded the paper into four rectangles, another person folded the paper into four triangles. Are the square-shaped, rectangular, and triangular fourths the same size? Prove your thinking."

Lining up the creases and cutting those triangle pieces off.
What can you do with those cut-off triangular pieces?

Testing materials to measure. 
Do we have to use the same material to measure both papers?

 Using clay and rulers to measure the area of a space.
Are these materials effective for measuring and comparing?

At the end of this unit, we made fraction flags! We colored in different fractions of our flags and put them on the posters that represented the flags' fractions. We had seven posters that represented: 1/2 and 1/2, 2/4 and 2/4, 1/4 and 3/4, 1/4 and 1/4 and 1/4 and 1/4, 1/4 and 1/4 and 2/4, 1/3 and 1/3 and 1/3, 1/3 and 2/3. Then we shared and discussed what we noticed about each poster.



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