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Activator. Below is a list of items: group the items by similarities: Be ready to discuss your groups. Banana bat 4 -3/4 apple Glove mound grapes 0.35 hat salad 0 strawberry.
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Activator • Below is a list of items: group the items by similarities: Be ready to discuss your groups. Banana bat 4 -3/4 apple Glove mound grapes 0.35 hat salad 0 strawberry
How do you simplify algebraic expressions by combining like terms? SPI: 706.3.1 evaluate algebraic expressions involving rational values for coefficients and/or variables
Constants Like Terms Coefficients The number part of a term that has a variable. 9x A term that has a number, but no variable, 5 Terms that have identical variable parts. 2y and 8y • Combining Like Terms: • Must have exact variable to • combine Combining Like Terms Simplify the expression 7c + 9 - 3c. Step 1:rewrite the expression as an addition problem: 7c + 9 + -3c Step 2: combine like terms 7c + -3c + 9 = 4c + 9
Simplify: • 8x + 15 – x +4 • 2y – 3x + 9x – y
Pair Share • 1’s tell 2’s what a coefficient is. • 2’s tell 1’s what a constant is.
Identifying the Parts • In the problem below identify all the coefficients, constants, and like terms. • x + 4 – 2x – 10
Writing and Simplifying an Expression • Tatami Mats: A rectangular tatami mat is twice as long as it is wide. Write and simplify an expression for the perimeter of the mat in terms of the width w • Draw a picture to help: • How do you find perimeter?
Summarizer • Match Game: Match the expression with its simplest form. 3m + 5y + -6 5m + 3y + -5 2m + 4y + -3 18m + 6y – 12 + 6 – y – 15m 4y + 10 + 3m + -y + -15 + 2m 6 – 7m – 4y + 7y + -11 + 12m
Challenge • 4x + -6xy – 5y + xy + ab – 5x + -3ab -x + -5xy + -5y + -2ab