Grade Eight – Algebra I - Unit 3 Mathematics Grade Eight – Algebra I - Unit 3 Algebra 1 - Unit 1 Algebra 1 - Unit 2 Algebra 1 - Unit 3 Content Vocabulary: Cross products Equivalent equations Identity Inverse operations Literal equations Percent error Percent change Principal square root Proportion Pythagorean Theorem Rate Ratio Similar figure Solution of an equation Solving Equations Solving Equations Rational Numbers Content Vocabulary Essential Understandings: Algebraic Reasoning: Patterns and Functions- solve two-step equations and equations with variables on both sides use the Distributive Property to collect like terms and solve equations Numerical and Proportional Reasoning- use deductive reasoning identify equations that are identities or have no solution find ratios and rates; solve proportions and use proportions to solve everyday problems find missing measures of similar figures; measure indirectly using similar figures define a variable in terms of another variable model distance-rate-time problems find percent of change and percent error find square roots and estimate using square roots; solve problems using the Pythagorean Theorem