# ALEX Lesson Plan

## Square and Cube Root Salad

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This lesson provided by:
 Author: Morgan Boyd Organization: Retirement
General Lesson Information
 Lesson Plan ID: 35592 Title: Square and Cube Root Salad Overview/Annotation: This lesson will develop the knowledge of squared and cubed numbers. The students will know when to use the square root and cube root to solve an equation. The students will memorize perfect squares and some cube roots. The answers will be left in radical form. Finally, the students will be able to identify the radicals as rational or irrational.This lesson results from the ALEX Resource Gap Project.
Associated Standards and Objectives
Content Standard(s):
 Mathematics MA2019 (2019) Grade: 8 4. Use square root and cube root symbols to represent solutions to equations. a. Evaluate square roots of perfect squares (less than or equal to 225) and cube roots of perfect cubes (less than or equal to 1000). b. Explain that the square root of a non-perfect square is irrational. Unpacked Content Evidence Of Student Attainment:Students: Evaluate expressions involving squared and cubed numbers. Solve equations with radicals with a square or cube root solution. Teacher Vocabulary:Radical Square Root Cube RootKnowledge:Students know: that the square root of a non-perfect square is an irrational number. Equations can potentially have two solutions. how to identify a perfect square/cube.Skills:Students are able to: define a perfect square/cube. Evaluate radical expressions representing square and cube roots. Solve equations with a squared or cubed variable.Understanding:Students understand that: there is an inverse relationship between squares and cubes and their roots.Diverse Learning Needs: Essential Skills:Learning Objectives: M.8.4.1: Define square root, cube root, inverse, perfect square, perfect cube, and irrational number. M.8.4.2: Recognize the inverse operation of squaring a number is square root and the inverse of cubing a number is cube root. M.8.4.3: Restate exponential numbers as repeated multiplication. M.8.4.4: Calculate the multiplication of single or multi-digit whole numbers. M.8.4.5: Recognize rational and irrational numbers. Prior Knowledge Skills:Restate exponential numbers as repeated multiplication. Define rational number. Alabama Alternate Achievement Standards AAS Standard: M.AAS.8.4 Calculate the square of numbers 1 through 10.

Local/National Standards:

Primary Learning Objective(s):

The student will be able to solve equations using square roots.

The student will be able to solve equations using cube roots.

The student will be able to distinguish between rational and irrational numbers with radicals.

Preparation Information