Grade 2 Unit 2 Addition Subtraction to 20
Unit 2 - Addition Subtraction to 20
Content Emphasis/ Big Ideas
In this unit, students will flexibly work with sums and differences in the range of 20. Through the understanding of number relationships such as; equality, part-part-whole and inverse relationships. Students develop strategies to attack basic problems in story context. Automaticity of addition and subtraction facts through 20 should be mastered by the end of the school year.
Standards:
2.CE.1 The student will recall with automaticity addition and subtraction facts within 20 and estimate, represent, solve, and justify solutions to single-step and multistep problems, including those in context, using addition and subtraction.
Skills:
- Double Facts
- Add/Subtract through 20
- Add & Subtract in Context
- Understand Equality Through the use of the Equal Sign
Doubles Facts
Instructional Videos
Doubles Addition Facts Song
Add/Subtract through 20
Instructional Video
Fact Fluency Freeze Dance! Subtraction within 20
Add & Subtract in Context
Instructional Videos
Addition and subtraction word problems: superheroes
Understand Equality Through the use of the Equal Sign
Instructional Videos
Equal sign | Addition and subtraction within 20