Addition/Subtraction flash cards are required for Math Grades 1 through 4. These flash cards are numbered and tabbed for easy sorting as directed in the Math Teacher's Guides. This system is coordinated with the student’s daily work in the LightUnits. The built-in review process ensures that the student masters the addition and subtraction facts through 10 in Grade 1 and facts through 18 in Grade 2. The cards are also used in Grades 3 and 4.
The cards cover the addition and subtraction facts from 0-18 and come in a sturdy storage box with a lid.
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