Math Grade Ratios, Rates, Percents - Model …：年级数学比率，速率，和百分比模型….docx

Ratios, Rates, and PercentsMathematics Grade 6The focus of this unit is to develop an understanding of ratios and rates. Students learn that ratios compare the same types of measures and represent part:whole and part:part relationships. They also learn that ratios that compare different types of measures are called rates. Students apply these concepts to a variety of real world and mathematical situations, including problems involving measurement conversions and percents. In the culminating performance task, students plan a recipe, using ratios to find the quantities, unit rates, and costs of ingredients for different numbers of servings.This unit addresses the grade 6 Critical Area #1 of the 2011MA Curriculum Framework for Mathematics: Connecting ratio and rate to whole number multiplication and division, and using concepts of ratio and rate to solve problems.These Model Curriculum Units are designed to exemplify the expectations outlined in the MA Curriculum Frameworks for English Language Arts/Literacy and Mathematics incorporating the Common Core State Standards, as well as all other MA Curriculum Frameworks. These units include lesson plans, Curriculum Embedded Performance Assessments, and resources. In using these units, it is important to consider the variability of learners in your class and make adaptations as necessary.Table of ContentsStage 1 Desired Results3Stage 2 - Evidence7Stage 3 – Learning Plan8Lesson 1: Introduction to Ratios10Lesson 2: Writing Ratios15Lesson 3: Equivalent Ratios26Lesson 4: Equivalent Ratios37Lesson 5 Solving Mathematical and Real-Life Problems with Ratios50Lesson 6: Ratios - Assessment62Lesson 7: Understanding Rates and Unit Rates74Lesson 8: Solving Problems with Unit Rates81Lesson 9 Using Rates and Unit Rates to Make Informed Consumer Deciisons86Lesson 10: Rates and Unit Rates Assessment94Lesson 11: What is a Percent?99Lesson 12: Percents and Tape Diagrams116Lesson 13: Solving Percent Problems: Missing Part, Missing Percent