Using Compensatory Numbers To Subtract
Second graders solve problem situations using subtraction. They use mathematical tools and processes to develop strategies using compensatory numbers and multiples of 10. Teachers should go through a problem solving model with the lesson.
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Numbers to 1000 on a Line or Grid
A series of engaging activities gives second-graders practice with three-digit numbers up to 1000. They examine three hundreds charts, one with numbers 101-200, another with 901-1000, and a third counting by 10 to 1000. Worksheets give...
1st - 3rd Math CCSS: Adaptable
Ten-Frames – A Games Approach to Number Sense
"How can you help students visualize numbers in a way that is compatible with our base-ten number system?" The answer is simple: use ten-frames. Whether they're being used as a part of classroom routines or as instructional tools, this...
K - 3rd Math CCSS: Adaptable
Add Up To Four 2-Digit Numbers by Using Addition Facts and Friendly Numbers
Learning to recognize friendly numbers is a big step in developing fluency with addition. Looking at multiple real world examples, the instructor models how to rearrange addition number sentences and use friendly numbers to quickly and...
5 mins 1st - 3rd Math CCSS: Designed
Solve Subtraction Problems: Using Number Line
Number lines are great visual tools that can be used to teach a wide range of math topics. The final video of this series models how to use number lines when solving subtraction problems using the counting up strategy. Pause the video...
4 mins 2nd - 4th Math CCSS: Designed