Better Lesson
Better Lesson: Go Fishing for a Ten
Second graders use a familiar card game to help them build their math fact fluency for facts where the sum is 10.
Illustrative Mathematics
Illustrative Mathematics: Using Operations and Parentheses
The purpose of this task is to give students a chance to work creatively with three of the four fundamental arithmetic operations (addition, subtraction, and multiplication). It is well suited for helping students develop fluency with...