Grade 1 Mathematics Module 2, Topic C, Lesson 23

girl at computer

Objective: Solve add to with change unknown problems, relating varied addition and subtraction strategies.

Downloadable Resources

Resources may contain links to sites external to the EngageNY.org website. These sites may not be within the jurisdiction of NYSED and in such cases NYSED is not responsible for its content.

Common Core Learning Standards

CCLS State Standard
1.OA.4 Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the...
1.OA.5 Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
1.OA.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use...

Curriculum Map