MathKeys Software "Unlocking Whole Numbers, Vol. 11(Addition of Two and Three Digit Numbers)"
Third graders explore the addition of two and three digit numbers. After a class demonstration of adding 640 and 280 with base-ten blocks, they play a game on the computer, in pairs, with a goal to end up with a sum as close to 400 as possible.
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Collecting and Working with Data
Add to your collection of math resources with this extensive series of data analysis worksheets. Whether your teaching how to use frequency tables and tally charts to collect and organize data, or introducing young mathematicians to pie...
3rd - 6th Math CCSS: Adaptable