## Monday, November 18, 2013

### Double Trouble

We've been learning addition strategies in math lately.

Last week we learned about doubles. Knowing your doubles can really help when figuring out answers that are only 1 or 2 larger or smaller than the double.

For example, if I know that 5+5=10 then I can use that knowledge to figure out 5+6. I can say to myself that 6 is one larger than 5 so the answer is going to be one larger than double 5. If I wrote it out it would be something like saying 5+1=6 so 5+6 can also be written 5+5+1. Then in my head I can do 5+5 is 10 and add 1 to it. Voila! 11!

I found a great unit on addition strategies on TpT from Teacher's Clubhouse and it comes with a craft activity for each strategy. I don't plan to use them all but this one was a fun one to do. Check it out!

I put a bunch of them up on the small bulletin board. I love my classroom but, boy, do I wish I had more bulletin board space to display the class' work!

And, below, are a few that didn't make it up on the wall.

I enjoyed this lesson because it involved so many different skills. We reviewed sets and talked about how you had to have equal sets in each part of the glasses. We chose doubles (only 2 students were allowed to pick the same double) and learned about using them as a mental math strategy. And, they had to follow directions in terms of adding the face and colouring in using crayons so it was a listening skills exercise as well.

Needless to say, there were 3 students who immediately started colouring with felt pens. If the day ever comes when each and every student carefully listens to and follows directions, I may just fall over in a faint!!!!