Illustrative Mathematics

Level A
Unit: Numbers and Operations and Algebraic Thinking
Lesson 1.4.13 Addition and Subtraction Centers (Multiples of 10, Within 20, Represent a Collection)

Lesson topic: Addition and subtraction within 20

Instructor Materials

  • Teacher Guide
  • Slides
  • Level A Centers: Check it Off stages 1-3, Five in a Row: Addition and Subtraction stages 1-4, Grab and Count stage 2, How Close? stages 1&2, Number Puzzles stages 1&2, Shake and Spill stages 3-5
  • CCRS Standard: 1.NBT.4, 1.NBT.5, 1.NBT.6, 1.OA.5, 1.OA.6, 1.OA.8
  • Learning goal: Add and subtract within 20. Add tens to two-digit numbers. Count and represent a collection.
  • 1.4 Assessment and Practice Problems

Student Materials

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