Addition Fact Strategy Adding 9

Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Addition Fact Strategy Adding 9
Created ByJust Ask Judy
Format
PDF (29 MB|44 total; 41 usable)
Standards
$3.50
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This is a set of resources to help you introduce and teach The 9 Rule (adding 9) addition fact strategy. It is a perfect pack of materials to help your first and second grade math students understand the concept underlying this strategy. As a prerequisite, your students need to be fluent with adding 10 to a single-digit number. The introductory activities are concrete and require multi-linking cubes (the ones that link on all sides), 2 sets of 10 in two different colors, for each participating student or pair of students. There are additional activities with pictures or equations to develop familiarity with the equations underlying this strategy. This set of activities is based on making a ten by subtracting one from the other addend. I have included color and black/ gray/ white options.

Check out a free sample from this resource!

These addition equations are covered in this resource:

9 + 4 9 + 5 9 + 6 9 + 7 9 + 8

4 + 9 5 + 9 6 + 9 7 + 9 8 + 9

This resource was crafted by Judy, a teacher with a master’s degree and more than 35 years of teaching experience.

This resource includes 41 usable pages:

  • 3 pages teacher information
  • 1 page color open-ended cube mat
  • 1 page color equation cards
  • 10 pages color equation cube mats
  • 3 pages color matching cube cards
  • 2 pages color matching equation cards
  • 1 page black/ white open-ended cube mat
  • 1 page black/ white equation cards
  • 10 pages black/ gray/ white equation cube mats
  • 3 pages black/ white matching cube cards
  • 2 pages black/ white matching equation cards
  • 2 pages recording sheets (matching cube cards, matching equation cards)
  • 2 worksheets

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to see state-specific standards (only available in the US).
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Total Pages
44 total; 41 usable
Answer Key
N/A
Teaching Duration
N/A
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