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Pre-Algebra Practice Book, Grades 6 - 8

Geometry Practice Book, Grades 7 - 8

Chemistry, Grades 6 - 12

Helping Students Understand Algebra II, Grades 7 - 8

Helping Students Understand Pre-Algebra, Grades 7 - 8

Helping Students Understand Geometry, Grades 7 - 8

Algebra Practice Book, Grades 7 - 8

Helping Students Understand Algebra, Grades 7 - 8

Chemistry, Grades 5 - 8

Algebra II Practice Book, Grades 7 - 8

Simple Machines, Grades 6 - 12

Light and Sound, Grades 6 - 12

Light and Color, Grades 5 - 8

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Simple Machines, Grades 5 - 8