The Key to curriculum is a supplemental resource to reinforce or introduce the concepts from Fractions through Geometry. Each topic is comprised of a set of booklets that can be purchased as a set or as individual books. The Fractions set has four booklets. There is also an answer key and reproducible tests available separately for most sets.

Key to Fractions covers all topics from basic concepts to mixed numbers and is written with secondary students in mind. Minimal reading is required, so students can easily work independently or in small groups. These self-paced, self-guided workbooks motivate students to succeed.

This is book 4 of the Key to Fractions.