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The Split Personality of a Minus Sign
Students often get confused with negative numbers because the same symbol is used to mean two related but different things. Negative quantities and subtraction are not the same. –7 can mean the opposite of 7 –7 can also mean subtract 7 Students have learned that the subtraction symbol means remove...
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Getting Ready for School Math
You learned to speak before you went to school. That made it easier to learn to read and write. Understanding math language makes it easier to learn math. Zip and Abby helps your child learn math words and phrases the way we learn language naturally – through experience, not...
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