Students practice addition and subtraction problems without regrouping. In this lesson, students practice addition and subtraction problems without regrouping using base-10 block manipulatives and ...

Want to help your second-grader master the basics of 2nd grade math? Here are some of the skills your child will be learning in the classroom. Count forward within 1000. Count by 5s. Count and add by ...

The confusion (likely intentional) boiled down to a discrepancy between the math rules used in grade school and in high school. By Steven Strogatz Recently I wrote about a math equation that had ...

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