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# Help with Ratios

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Exponents Video Lesson 6: The Order of Operations Video. Module C Overview Lesson 7: Replacing Letters with Numbers Video Lesson 8: Replacing Numbers with Letters Video. Module D Overview Lesson 9: Factoring Expressions Video Lesson Distributing Expressions Video Lesson 13 , Lesson Writing Division Expressions Video. Module E Overview Lesson Module F Overview Lesson Writing and Evaluating Expressions - Exponents Video.

Module G Overview Lesson 23 , Lesson Module H Overview Lesson Problems in Mathematical Terms Video Lesson From Equations to Inequalities Video Lesson End-Module Assessment Topics C through E assessment 1 day, return 1 day, remediation or further applications 2 days. Area in the Real World Video. Module B Overview Lesson 7: Distance on the Coordinate Plane Video Lesson 8: The Formulas for Volume Video Lesson Volume in the Real World Video.

Constructing Nets Video Lesson End-Module Assessment Topics A through D assessment 1 day, return 1 day, remediation or further applications 2 days. What is the current ratio of teacher to students in their classroom? Why would this information be useful to students and parents? Which way do they prefer to write ratios: You may want to lead students in a quick discussion of their experience finding and writing ratios and ask them to share a few responses to the topics they discussed in the writing exercise.

Assess the understanding students have of ratios based on their answers to the writing topics. To help students further relate using ratios to their own experiences, ask them to consider taking a few notes on where they see ratios involving people, such as ratios of teachers to students in other classes, cashiers to customers at stores, servers to customers at restaurants, or people to cars they see on the road.

Students can bring in their notes and discuss whether they think changing the ratios they observed would improve the conditions they experience.

For example, having more people in fewer cars would make for less traffic, or having fewer students per teacher might improve student learning. Materials Clipboards Writing utensils Paper Access to general classroom and campus materials. Lesson Procedure Step One: Introduce Ratios Demonstrate to students the concept of using ratios to compare objects.

Ask students to count the number of each object, and demonstrate how to write ratios to compare the quantities of the objects using the following formats: Markers You can vary items in the ratios or add additional items as needed until students appear confident in writing ratios based on the number of objects in relation to each other. Suppose we want to write the ratio of 8 and We can write this as 8: Jeannine has a bag with 3 videocassettes, 4 marbles, 7 books, and 1 orange.

Two other ways of writing the ratio are 7 to 4, and 7: To compare ratios, write them as fractions. The ratios are equal if they are equal when written as fractions. Are the ratios 3 to 4 and 6: Since both of these products equal 24, the answer is yes, the ratios are equal.

Remember to be careful! A ratio of 1: Are the ratios 7: A proportion is an equation with a ratio on each side. It is a statement that two ratios are equal.

When one of the four numbers in a proportion is unknown, cross products may be used to find the unknown number.

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Understanding Ratios A ratio is a pair of numbers that compares two quantities. Write the ratio 3 ways. 8. Writing to Explain At a cat and dog hospital, 9 of the patients were cats, 17 were dogs. Both ratios compare feet to seconds, so the units are the same.

If the ratio is women to men then the corresponding ratio is 25/ So, while writing a ratio the order of the terms is very important. So, while writing a ratio the order of the terms is very important. ratios and proportions worksheets and help pages by math crush. homework help write ratios paring the numbers of letters. ratio worksheets.