Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
Related Lessons
1st Grade
Make a Ten
Lesson 206
Warm up with a Mystery Math Mistake to compare expressions. Make a 10 to help you add. Use a double 10-frame and the "make 10" strategy to add two single-digit numbers.
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.
1st Grade
Expressions can be Equal
Lesson 202
Represent 10 using a number bond and 10-frame to help solve a Mystery Math Mistake. Use Notice and Wonder with an unbalanced see-saw to tell whether two expressions are equal. Then, practice with telling whether two expressions are equal (balanced). Math Mights was adapted from IM K-5 Math™ ©2021 by Illustrative Mathematics®, released under the Creative Commons Attribution 4.0 International […]
