Monday, November 5, 2012

Fractions in First Grade - Common Core Standard

 This month our bulletin board features fractions for the first time in First Grade. The Common Core Standard for Geometry - Reason with Shapes and Their Attributes was addressed.
       1.G.3. Partition circles and rectangles into two and four equal shares, describe the shares using     the    words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
These lessons taught the children how to divide their "pizza" in half and make 'half of" it one topping and the other half another topping. Students labeled each side with 1/2 noting that each side had equal shares. They also designed "rugs". These rugs used two halves - triangles or rectangles - to make half of the square also understanding that these decomposed into smaller equal shares. We are "dividing and conquering" the common core anyone?


Lourdes said...

Chefs and designers in the making! I loved the "whole" lesson/board!

Anonymous said...

Looks great!! What a yummy and creative way to teach fractions.

Thank you for all you do!

Many blessings,

Christa said...

I love how you always make learning fun. What a great lesson! Thank you a million times over :-)