Grade 7 Module 4: Percent and Proportional Relationships
In Module 4, students deepen their understanding of ratios and proportional relationships from Module 1 by solving a variety of percent problems. They convert between fractions, decimals, and percents to further develop a conceptual understanding of percent and use algebraic expressions and equations to solve multi-step percent problems. An initial focus on relating 100% to “the whole” serves as a foundation for students. Students begin the module by solving problems without using a calculator to develop an understanding of the reasoning underlying the calculations. Material in early lessons is designed to reinforce students’ understanding by having them use mental math and basic computational skills. To develop a conceptual understanding, students use visual models and equations, building on their earlier work with these. As the lessons and topics progress and students solve multi-step percent problems algebraically with numbers that are not as compatible, teachers may let students use calculators so that their computational work does not become a distraction. (Excerpt taken from NYS Engage website)NYS Engage Module 4 - link to all things related to Module 4, provided by NYS
Engage worksheets and Video Lessons for all lessons covered in Module
http://www.onlinemathlearning.com/common-core-math-worksheets-grade7.htmlImportant Vocabulary (taken from module lesson 7)
§ A markup is the amount of increase in a price.
§ A markdown is the amount of decrease in a price.
§ The original price is the starting price. It is sometimes called the cost or wholesale price.
§ The selling price is the original price plus the markup or minus the markdown.
§ The markup rate is the percent increase in the price, and the markdown rate (discount rate) is the percent decrease in the price.
§ Most markup problems can be solved by the equation:
Selling Price =(1 + m)(Whole), where m is the markup rate, and the whole is the original price.
§ Most markdown problems can be solved by the equation:
Selling Price =(1 - m)(Whole), where m is the markdown rate, and the whole is the original price.Below is the old videos on Khan Academy for topics in Module 4Lesson 1Lesson 2 and 37.RP.A. 3 Using the formula Part = Percent x Whole to problem-solve when given two terms out of three from the part, whole, and percent video 17.RP.A. 3 Using the formula Part = Percent x Whole to problem-solve when given two terms out of three7.RP.A. 3 Using the formula Part = Percent x Whole to problem-solve when given two terms out of threeLesson 47.RP.A.3 Percent Increase and Decrease videoLesson 7Lesson 87.RP.A.3 Percent Error video7.RP.A.3 Percent Error Study GuideLesson 107.RP.A.3 Calculating Simple Interest7.RP.A.3 Interest Study GuideLesson 11Lesson 12Lessons 13 - 15 (Post Test)7.G.A.1 Scale DrawingsLesson 177.RP.A.3 and 7.EE.B.3 Mixture Word Problems video 17.RP.A.3 and 7.EE.B.3 Mixture Word Problems video 27.RP.A.3 and 7.EE.B.3 Mixture Word Problems video 3Lesson 187.RP.A.2c Probability Explained video7.RP.A.2c Finding Probability video 17.RP.A.2c Finding Probability video 2