Includes Standard Clusters:

• Interpret the structure of expressions.
• Write expressions in equivalent forms to solve problems.
• Perform arithmetic operations on polynomials.
• Create equations that describe numbers or relationships.
• Solve equations and inequalities in one variable.
• Solve systems of equations.

Collection Contents


Focus on quadratic and exponential expressions. For A.SSE.1b, exponents are extended from the integer exponents found in Unit 1 to rational exponents focusing on those that represent square or cube roots.
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It is important to balance conceptual understanding and procedural fluency in work with equivalent expressions. For example, development of skill in factoring and completing the square goes hand-in-hand with understanding what different forms of a quadratic expression reveal.
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Focus on polynomial expressions that simplify to forms that are linear or quadratic in a positive integer power of x.
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Extend work on linear and exponential equations in Unit 1 to quadratic equations. Extend A.CED.4 to formulas involving squared variables.
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Students should learn of the existence of the complex number system, but will not solve quadratics with complex solutions until Algebra II.
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Include systems consisting of one linear and one quadratic equation. Include systems that lead to work with fractions. For example, finding the intersections between x^2+y^2=1 and y = (x+1)/2 leads to the point (3/5, 4/5) on the unit circle, corresponding to the Pythagorean triple 3^2+4^2=5^2.
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