Math 8 Module 5 Notes
Grade 8 MathUnit 1 – Square Roots & Pythagorean TheoremStudent CopyLesson 1 8.N.1 - Square Roots and Perfect Squares Investigation - Work with a partner.Materials: You will need graph paper (plain paper will work if that’s all you have), a pencil, and 20 cubes.Instructions: Use the cubes to make as many different rectangles/squares as you can with each area. Draw/sketch the rectangles and squares on your grid paper.4 square units12 square units6 square units16 square units8 square units20 square units9 square unitsQuestions:For which of the areas above were you able to make a square?What is the side length for each square you made?How is the side length of a square related to its area?VocabularySquared: The process of multiplying a number by ________________. Ex: “6 squared” means ________________________Square Root: A number which, when multiplied by ________________, results in a given number.Ex: The square root of 16 is ____Ex: Find the square root of 100. Perfect Squares: are numbers whose square roots are ____________ numbers.Ex: State whether the following are perfect squares or not.a) 4b) 7Ex: Complete the following list of perfect squares. 1=4= 9= 16= 25= 36 = 49 = 64 = 81 = 100 = 121 = 144 = Ex: Show that 49 is a square number. Use a diagram, symbols, and words. Ex: Determine whether 441 is a perfect square using prime factors.AssignmentDo #1-8, 10-15 p. 8 ................
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