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Three students work from using dots as counters in columns (left) to writing the symbolic number (right).

Place Value

Three students work from using dots as counters in columns (left) to writing the symbolic number (right).

This set of numbers is used by a teacher to help the students practice adding numbers in columns. After they have mastered two numbers, the chart can be pulled down to show columns of three numbers to add and so on.

Roller Chart

This set of numbers is used by a teacher to help the students practice adding numbers in columns. After…