Introducing a new self checking manipulative that teaches kids their addition and subtraction math facts faster than anything else currently available - including computer software. Remediate or accelerate. Increases math fluency for addition, subtraction, tens, doubles, skip counting, even - odd, , time to the hour and more. The zip strip system teaches inverse function automatically. Increases the ability to calculate quickly and accurately - enabling a student to better understand the concepts that govern which math functions to use and when to use them. A great home school and tutoring tool.

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