They begin addition and subtraction problems involving teen numbers.

29 Instructional Days (329 Hours)

Description

Module 2 serves as a bridge from students' prior work with problem solving within 10 to work within 100 as students begin to solve addition and subtraction problems involving teen numbers. Students go beyond the Level 2 strategies of counting on and counting back as they learn Level 3 strategies informally called "make ten" or "take from ten."

The Following Topics Are Included within this Module:

• Topic A:  Counting On or Making Ten to Solve
• Topic B:  Counting On or Making Ten
• Topic C:  Change Or Addend Unknown
• Topic D:  Decompositions of Teen Numbers

Lessons are organized under each of the topic areas.