Price $4.25 In Adding or Subtracting Within 20, learners answer questions after participating in learning activities. Adding or Subtracting Within 20 can be used as a class game, in cooperative groups or as a math center. This lesson includes 46 task cards, key, optional directions for teachers and links to web lessons songs and printable activities prior to task card use. This lesson is aligned to Common Core State Standards.
Lesson activities can also be completed as a whole group or small group with the instructor using a SmartBoard, white board and adobe reader, projector or document camera as learners easily follow along.
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Common Core State Standards
2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
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