8th grade mathematics
(additional middle school math courses can be found here)
Craving an old-school textbook? This free Common Core Course 3 textbook (choose program "California") aligns nicely with 7th grade (just notice the units are out of order). This text also has practice quizzes, chapter reviews, chapter tests, and study help.
Unit 1: One-Variable Expressions, Equations, and Inequalities
Unit 3: Data and Statistical Reasoning
Unit 4: Systems of Linear Equations
Unit 5: Irrational Numbers, Integer Exponents, Scientific Notation
Unit 6: Geometric Relationships
What to know more details about what topics are covered in each unit? Check out the Georgia Department of Education 8th grade curriculum map.
Calculators
Four Function (Desmos)
Scientific Calculator (Desmos Scientific)
Graphing Calculator (Desmos Graphing)
Extra Practice
Open Up Resources Nonprofit - my favorite free resource for practice and explanations, best alignment with 8th grade standards and many materials (see also Illustrative Mathematics - same content different platform)
KutaSoftware - free simple worksheets with answers, content doesn't align perfectly with 8th grade math so you have to dig through "preAlgebra" and "Algebra" to find what you want
This website is a labor of love for the students at DT Howard Middle School (and it's a work in progress).