Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Related Lessons
1st Grade
Subtraction Strategies
Lesson 208
Warm up with a Mystery Math Mistake to find the error in DC's addition. Use different strategies to subtract including counting back and the connection between addition and subtraction. Use a number line to help count on to find a difference.
1st Grade
Near Doubles
Lesson 207
Warm up with a Mystery Math Mistake to add 9 and 5 using a double 10-frame and a decompose strategy. Use near-doubles to add with double 10-frames and a compensation strategy.
1st Grade
Word Problems with Addition and Subtraction
Lesson 112
Solve addition and subtraction word problems with a Step-by-Step Visual Model checklist. Understand what the problem is asking to help you solve it. Engage in a Number Talk to find "how many" and to answer a secret question.
