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CK-12 Foundation
Ck 12: Elem Math: Subtract by Counting Backward With Pictures Numbers Up to 20
[Free Registration/Login may be required to access all resource tools.] The video uses pictures to aide in counting back to solve subtraction. The video is followed by additional problems for students to practice the skills discussed in...
CK-12 Foundation
Ck 12: Elem Math: Subtracting by Counting Backward With Pictures
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve a subtraction problem using a model and counting back from a given value, then writes the subtraction problem using numbers. The video...
PBS
Pbs Kids Afterschool Adventure!: Operation: Number Power Activity Plan
In this week's Afterschool Adventure, children will use number powers to solve problems and save the day! They will use grouping power to save a parade, skip counting power to catch a pie-snatching thief, and speed counting and place...
University of Cambridge
University of Cambridge: Nrich: Super Value Codes
On this one page website sharpen your logic and addition skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: 2, 4, 6, 8
On this one page website sharpen your logic, addition, and subtraction skills while working on this challenge. The solution is available to double check your solution.