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11.19: Counters

Last updated

Sep 11, 2021
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- 11.18: Centimeter Strips
- 11.20: Number Squares

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Postive Green Counters

Each counter represents a positive one (+1). THese are used to perform the four basic operations (addition, subtraction, multiplication and division) on the integers (positive and negative whole numbers and zero).

$clipboard_e61718b11cff47dfd470d77ad3dcd5df8.png$

Negative Red Counters

Each counter represents a negative one (-1). These are used to perform the four basic operations (addition, subtraction, multiplication and division) on tthe integers (positive and negative whole numbers and zero).

$clipboard_e13d2e0b41013342e41b876f4678b5dab.png$

Postive Green Counters

Negative Red Counters

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