Common Core Grade 8 Mathematics

These interactive lessons use dynamic graphics and guided discovery to strengthen and connect symbolic and visual reasoning. They give the student a hands-on visual exposition of all Common Core Grade 8 Mathematics topics, reinforced by adaptive exercises and randomly generated tests. All exercises and tests are checked and graded automatically. Hover the mouse over a link below to see an example from that lesson, or click on a test link to see a concise summary of a group of lessons. Relevant standards are listed after each lesson’s exercises. We also provide a course glossary.

Students should have scratch paper available, access to (software or hardware) numeric calculators except during the Arithmetic Review chapter, and other students or a teacher to ask for help when they are stuck. All students are encouraged to both give and receive mathematical explanations with their peers. Please send us your comments, questions and suggestions.

This course is unfinished, so the lessons, exercises, and tests here are currently offered for free to anyone wishing to try them. Lessons without links yet are under development.