Saturday, September 24, 2011

Geometry Galore!

My first math unit in Every Day Math is Geometry.  I was pretty relieved because I taught it in late spring with my third graders and it is a unit that they love.  There are only a few new vocabulary words introduced at this level .  I read  a few of my favorite geometry books and planned activities to reinforce our standards:
Sir Cumference and the First Round Table (A Math Adventure)From Simple Shapes to Geometry
The Greedy Triangle (Scholastic Bookshelf)What's Your Angle, Pythagoras? A Math Adventure
Ed Emberley's Picture Pie (Ed Emberley Drawing Books)Ruth Heller's Designs for Coloring: More Geometrics

We used compasses for the first time.  It went better than i thought.  No one tried to poke anyone and there were no accidents.  We practiced drawing concentric circles.   It also reinforced our multiplication facts.

Another activity that we did was break into several groups and use our bodies with elastic to create polygons and to demonstrate geometric terms.  I read the lesson on-line and it said to use Chinese jump-ropes that I could not find anywhere.  (you know you are old when the kids don't know what they are)  I ended up buying 3 packages of sewing elastic (3/8") and tying each one into a big circle.  Here are the kids demonstrating intersecting lines.
Another activity that I plan on doing next week is using toothpicks and glue to create geometric vocabulary pictures.  I also found this idea from Pinterest.


  1. Thanks for sharing the books, I've never seen the angle book before! I just saw an art project on Runde's Room that used concentric circles and was soooo cute, you should check it out!

  2. I wanna be in your class!!! The activities you mentioned above look like a lot of fun. For this reason, I am giving you the Versatile Blogger Award. Please visit my blog @ to find out more details.