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7.3 Study Island Guide December-January

A. SCALE DRAWING

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EXAMPLES

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B. RATIOS AND PROPORTIONS

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VIDEO: Real World Proportion https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-constructing-proportions/v/find-an-unknown-in-a-proportion-2?v=4ywTWCaLmXE EXAMPLES

C. UNIT RATES

Based on the graph, what is the unit rate of miles driven per day? SOLUTION: Find a point (x,y) on the graph to determine the unit rate. Using the point (2, 60), the ratio of y to x is 60 miles for 2 days. Since unit rate compares a quantity to one, convert 60 miles for 2 days to 30 miles per day.

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VIDEOS: Unit Rates https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/cc-6th-rates/v/finding-unit-rates?v=Zm0KaIw-35k Unit Prices https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/cc-6th-rates/v/finding-unit-prices?v=d7rAlcNHDUI EXAMPLES:

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D. PROPORTIONAL RELATIONSHIPS

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EXAMPLES:

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E. PERCENTS

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VIDEOS: Percent, Base, and Amount https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-pre-alg/v/identifying-percent-amount-and-base?v=JaScdH47PYg

Calculating Percents https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-percent-word-problems/v/solving-percent-problems-3?v=DAikW24_O0A

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EXAMPLES: