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Grades K-2 Sample Lessons

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Numbers to One Hundred on the MathRack

Using a ten-wire MathRack, students recognize and apply patterns of five, ten, and fifty to develop early counting.

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Build Expressions Equal to Twenty

Using expressions that have one to three addends, this tool engages students in understanding various number pairs that equal up to twenty.

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Grades 3-5 Sample Lessons

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Addition on the Number Line Using Landmark Numbers

Using an open number line, students leverage landmark numbers such as tens and hundreds to solve addition problems.

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Multiplication: Open Arrays

Students compose arrays, use partial products, and develop understanding of the distributive property to mentally multiply up to 3-digit by 3-digit numbers.

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Grades 6-8 Sample Lessons

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Coordinate Grids: Lines of Reflection

Students reflect points on a coordinate grid over a line of reflection.

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Supplementary and Vertical Angles

Students reason deductively about supplementary, vertical, and adjacent angles to make rotations, aim for targets, and determine angle measurements.

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