Subtraction Wheels (Facts to 20)
Subtraction wheels can be an interesting ways to show the relationship between subtraction and addition. There are 4 wheels each containing 10 problems involving subtraction from the numbers 20, 19, & 18. An answer key is included.
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Grade 1 Supplement Set A3 - Number & Operations: Addition & Subtraction on the Number Line
Hop your way through a mathematical equation with your first grade class as they learn the idea of moving up and down the number line. Adding and subtracting like little frogs is an engaging and clever way to teach/reinforce this concept.
K - 2nd Math CCSS: Adaptable