The instructional focus in this unit is representing large and small numbers using exponents and scientific notation, solving one- and two-step equations and inequalities containing integers, and performing the four operations on integers.
Students extend their prior understanding of powers and exponents to negative exponents in part A. This understanding is necessary for writing large and small numbers in scientific notation. Students use scientific notation to compare the magnitude of numbers and to compute with very large and very small numbers.
In part B of this unit, students apply formulas and evaluate algebraic expressions. They use their prior understanding of order of operations and apply the commutative, associative, and distributive properties to solving equations and inequalities. Students write one- and two-step equations with whole numbers in one variable to represent relationships between quantities in real situations.
Comparing, ordering, and representing rational numbers in equivalent forms is a focus in part C of the unit. Students develop an understanding of operations with integers using concrete models and number lines. This understanding leads to the ability to perform operations and solve problems with integers. Matrices are introduced in this part of the unit. Students add and subtract matrices containing integers.
In part D of this unit, students write and solve equations containing integers. Students also solve and graph inequalities on a number line.
Unit 2 is typically a nine-week unit taught in October and November
Unit 2 Standards for Math 7 (Math B)(PDF)
Explanation of what your child should understand by the end of each unit (enduring understandings), how he/she will get to that understanding (essential questions), and how he/she will be evaluated (indicators).
Unit 2 Content map for Math 7 (Math B) (PDF)
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