This one is just for you!
Just wanted to share some mental strategies our TEKS specify that students should be able to use to assist with solving addition and subtraction of 2 digit numbers (2nd grade) and 3 digit numbers (3rd grade).
It might be advantageous to brief yourself on "Number Talks" to help students be more flexible and fluent with these strategies.
You can find "Number Talks" on YouTube or purchase the book which has a video CD at the back with various examples. I would suggest utilizing them every morning before class for about 10 minutes to build fluency and flexibility with number (sense) among your students!
The following videos help build on this number sense and should be used when teaching grade 2 +/- (2.4B & 2.4C) or grade 3 +/- (3.4A & 3.5A).
COMPENSATION (strategy)
PLACE VALUE (strategy)
MAKING A TEN (strategy)
Enjoy! And leave comments or hit me up on Twitter (@Lady_JAG) or Facebook (Kim O'Neal)!
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