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North Penn School District Elementary Math Parent Letter Grade 6 Unit 2 – Chapter 4: Ratios and Rates Examples for each lesson: Lesson 4.1 Lesson 4.2 Lesson 4.3 More information on this strategy is available on Animated Math Model #15. Lesson 4.4 More information on this strategy is available on Animated Math Model #15. Lesson 4.5 Lesson 4.6 More information on this strategy is available on Animated Math Model #15. Lesson 4.7 More information on this strategy is available on Animated Math Model #15. Lesson 4.8 Vocabulary Equivalent ratios – ratios that name the same comparison Rate – a ratio that compares two quantities measured in different units Ratio – a comparison of two quantities using division Unit rate – a rate in which the second quantity in the comparison is one unit Coordinate plane – a plane formed by a horizontal line called the x-axis and a vertical line called the y-axis Equivalent fractions – two or more fractions that name the same amount Ordered pair – a pair of numbers that can be used to locate a point on the coordinate plane x-coordinate – the first number in an ordered pair, which tells the distance to move right or left from (0, 0) y-coordinate – the second number in an ordered pair, which tells the distance to move up or down from (0, 0)