+1 424-240-5680

Happy Thursday!  Today for MaTh (math activity Thursday) I’m looking at CCSS 2.G.A.3 (only fitting since I did the standard 2.G.A.2 last week)

Here is what 2.G.A.3 states…
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.

Sounds pretty good, but the last sentence I am not sure what they mean by that.  If you know I’d love to hear what you think.  If wholes are identical doesn’t that mean they are the same shape?  Anyway, my activity is for the first sentence of this standard.

Activity Name: Partitioning shapes (equally!).  Any kids can partition shapes… Yep, drawing lines through objects is easy, but how can we make all the sections equal!?  Get out the rulers, compasses, and protractors students!  For the easy way you can fold papers, but I recommend trying the measurements too.

Concepts:  Geometry (knowing more than just the shape, but to divide up a circle we will need to know the center point and discuss degree measurements perhaps), early division (in order to make things truly equal we will be dividing a bit), and fractions (please let your students know that fractions are division problems too).

Supplies: Ruler, compass, protractor, pencil (and paper).

Time Needed: This really depends on your class.  You might want to just take one shape at a time and do one each day.  We are doing both a rectangle and a circle today.

Instructions:

1. Have your students draw a circle with their compass (marking the center dot) and a rectangle–making sure that they have 90 degree angled corners.  (You can and should discuss this with them)

2. Discuss partitioning.  What does it mean?  If we put three partitions in any rectangle would it make each part 1/4?  Discuss the importance of having each part be equal.
3. Teach how to find the equal partition.
4. Have kids play and discover.  The more they do these types of hands-on activities the more they can grasp other geometric concepts too!  