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This explains how astronomers think the universe and solar system formed and how elements of the periodic table developed.

This lesson teaches students to add and subtract fractions.

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This lesson explains how to multiply and divide fractions.

This lesson teaches students the proper order of mathematical operations when solving problems.

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This lesson introduces students to the commutative, associative, and distributive properties of multiplication.

In this exercise, students respond to multiplication and division problems.

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This lesson teaches students some shortcuts they can use when multiplying large numbers.

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This simple worksheet uses basic addition.

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These worksheets give students practice in adding and subtracting.

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This resource explains the difference between prime and composite numbers and provides practice questions.

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This resource explains the 'real number' system.

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This worksheet gives students practice in using the proper order of mathematical operations when solving equations. Solutions are provided.