Lesson 1

Exponent Review

Lesson Narrative

In grade 6, students worked with whole number exponents. This lesson reviews those concepts and subtly introduces the idea that repeated division by a number can be thought of as repeated multiplication by the reciprocal of that number, which plays a key role in later work on negative exponents.

Learning Goals

Teacher Facing

  • Comprehend that repeated division by 2 is equivalent to repeated multiplication by one-half.
  • Create an expression that represents repeated multiplication, and explain (orally) how the structure of the expression helps compare quantities.

Student Facing

Let’s review exponents.

Learning Targets

Student Facing

  • I can use exponents to describe repeated multiplication.
  • I understand the meaning of a term with an exponent.

CCSS Standards

Building On

Building Towards

Glossary Entries

  • exponent

    In expressions like \(5^3\) and \(8^2\), the 3 and the 2 are called exponents. They tell you how many factors to multiply. For example, \(5^3\) = \(5 \boldcdot 5 \boldcdot 5\), and \(8^2 = 8 \boldcdot 8\).

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