In Grade 8, instructional time should focus on three critical areas: (1) formulating and reasoning about expressions and equations, including modeling an association in bi-variate data with a linear equation, and solving linear equations and systems of linear equations; (2) grasping the concept of a function and using functions to describe quantitative relationships; (3) analyzing two- and three-dimensional space and figures using distance, angle, similarity, and congruence, and understanding and applying the Pythagorean Theorem.

Standards

The Number System
• Know that there are numbers that are not rational, and approximate them by rational numbers.
Expressions and Equations
• Work with radicals and integer exponents.
• Understand the connections between proportional relationships, lines, and linear equations.
• Analyze and solve linear equations and pairs of simultaneous linear equations.
Functions
• Define, evaluate, and compare functions.
• Use functions to model relationships between quantities.
Geometry
• Understand congruence and similarity using physical models, transparencies, or geometry software.
• Understand and apply the Pythagorean Theorem.
• Solve real-world and mathematical problems involving volume of cylinders, cones and spheres.
Statistics and Probability
• Investigate patterns of association in bi-variate data.

Mathematical Practices
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.

Math 8 Units of Study
1. Real Numbers
2. Linear Relationships I (Linear Equations in One Variable)
3. Pythagorean Theorem
4. Volume
5. Linear Relationships II (Linear Equations in Two Variables)
6. Congruence and Similarity with Transformational Geometry
7. Systems of Equations
8. Statistics and Probability

*  The Math 8 Enriched class (for 8th grade students) covers all of the same units, but in more depth as time allows.

**  The Math 7-8 class (for 7th grade students) covers all of the same units in more depth, in addition to the following units from the 7th grade curriculum:  Proportional Reasoning and Applications of Percents