Curated OER
Reversing Numbers
Second graders solve a math word problem involving the addition of two digit numbers. They discuss the problem as a class, independently explore the problem, and discuss as a class the solution and how they organized their reversed...
Arcademics
Arcademics: Alien Addition
Students review addition while playing this learning game. Students shoot the spaceship that has the addition problem that matches the given solution.
NumberNut
Number Nut: Addition: Adding Two Digit Numbers
Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.