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# Scrambled Eggs I – Proportions and Equivalent Ratios

Students will analyze ratios and use proportions to solve problems using a ... (more)

Students will analyze ratios and use proportions to solve problems using a cooperative, kinesthetic activity in which they will create “human ratios.” Students will use ratios to compare two quantities, then solve problems cooperatively by demonstrating how proportions are written to show equivalent ratios. (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Teaching and Learning Strategies
Collection:
Big Ideas Fest
Author:
ISKME
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# Proportions and Ratios

This lesson is about ratios and proportions using candy boxes as well ... (more)

This lesson is about ratios and proportions using candy boxes as well as a recipe for making candy as situations to be considered. It addresses many Mathematical Reasoning standards and asks students to: Use models to understand fractions and to solve ratio problems; think about a ratio as part/part model and to think about the pattern growing in equal groups or a unit composed of the sum of the parts; find a scale factor and apply it to a ratio. (5th Grade Math) (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Lesson Plans
Teaching and Learning Strategies
Video Lectures
Collection:
Inside Mathematics
Provider:
Noyce Foundation
Author:
Lewis-Wolfsen, Hillary

# Ratio, Proportion and Percentages

From politics to cookery, ratios, proportions and percentages are part of everyday ... (more)

From politics to cookery, ratios, proportions and percentages are part of everyday life. This unit is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim! (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Syllabi
Collection:
Open University OpenLearn
Provider:
The Open University
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# Ratios and Proportions - Wisc Online

This learning object focuses on basic understanding of ratios and proportions and ... (more)

This learning object focuses on basic understanding of ratios and proportions and is part of the Kentucky Learning Depot, Kentucky’s P-20 repository for digital learning content. This math learning object replicates what might take place in a classroom, beginning with objectives, examples, and opportunities for users to practice and get feedback. This is appropriate for multiple grade levels throughout K-12 and some post-secondary, both “academic” and “technical” in application. (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Homework and Assignments
Collection:
Individual Authors
Provider:
Kentucky Learning Depot
Author:
A. J. Reed
Doug Jensen

Task Description: This 4-5 week unit focuses on developing an understanding of ... (more)

Task Description: This 4-5 week unit focuses on developing an understanding of ratio concepts and using ratio reasoning to solve problems. This sequence of tasks asks students to demonstrate and effectively communicate their mathematical understanding of ratios and proportional relationships. Their strategies and executions should meet the content, thinking processes and qualitative demands of the tasks. (less)

Subject:
Mathematics and Statistics
Material Type:
Assessments
Lesson Plans
Collection:
New York City Department of Education
Provider:
The New York City Department of Education
No Strings Attached

# Scrambled Eggs II – Human Ratios and Constructing Ratio Tables

Students will analyze ratios and use proportions to solve problems using a ... (more)

Students will analyze ratios and use proportions to solve problems using a cooperative, kinesthetic activity in which they will create “human ratios.” Students will apply proportional reasoning to demonstrate application of a multiplicative situation by using cross products to solving proportions. (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Teaching and Learning Strategies
Collection:
Open Author Resources
Author:
ISKME
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# Ratios for all occasions

A central theme in the middle school mathematics curriculum, proportional reasoning is ... (more)

A central theme in the middle school mathematics curriculum, proportional reasoning is based on making sense of ratios in a variety of contexts. The resources chosen for this unit provide practice in solving problems, often informally, in the format of ga (less)

Subject:
Mathematics and Statistics
Material Type:
Teaching and Learning Strategies
Collection:
Middle School Portal
Provider:
Ohio State University
Author:
Andy Ault
Carolyn Hamilton
Terese Herrera

# Human Graphing with Proportions

Students will use ratios to demonstrate the connections between proportional relationships, lines, ... (more)

Students will use ratios to demonstrate the connections between proportional relationships, lines, and linear equations. Students will solve problems using a cooperative, kinesthetic activity in which they will create a ratio table, then graph proportional relationships with their bodies to demonstrate that the ratio (or rate) is the slope that will always pass through the origin. (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Teaching and Learning Strategies
Collection:
Big Ideas Fest
Author:
ISKME
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# Trigonometric Ratios

Explore the meaning of the trigonometric ratios by measuring the sides of ... (more)

Explore the meaning of the trigonometric ratios by measuring the sides of these three triangles. (less)

Subject:
Mathematics and Statistics
Material Type:
Simulations
Collection:
GeoGebraTube
Provider:
GeoGebra
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# Proportion and Non-proportion Situations

This lesson unit is intended to help teachers assess whether students are ... (more)

This lesson unit is intended to help teachers assess whether students are able to: identify when two quantities vary in direct proportion to each other; distinguish between direct proportion and other functional relationships; and solve proportionality problems using efficient methods. (less)

Subject:
Mathematics and Statistics
Material Type:
Assessments
Lesson Plans
Collection:
Mathematics Assessment Project (MAP)
Provider:
Shell Center for Mathematical Education|University of California, Berkeley

# Common Core Math Grade 8 Represent Proportional Relationships

In Grade 6, students were introduced to ratios and unit rate. They ... (more)

In Grade 6, students were introduced to ratios and unit rate. They learned to use ratio reasoning to solve problems. Proportional relationships were a major focus in Grade 7. Students learned to compute unit rates that included fractions as well as determine if a relationship is proportional. They represented proportional relationships in graphs, equations, tables, diagrams, and verbal descriptions. In this lesson, students will extend their understanding of proportional relationships to discover that they are one kind of linear function. Aligned with Common Core standard 8.EE.B.5 (less)

Subject:
Mathematics and Statistics
Material Type:
Lesson Plans
Collection:
Open Author Resources
Author:
Curriculum Associates

# Ratio of boys to girls

In some textbooks, a distinction is made between a ratio, which is ... (more)

In some textbooks, a distinction is made between a ratio, which is assumed to have a common unit for both quantities, and a rate, which is defined to be a quotient of two quantities with different units (e.g. a ratio of the number of miles to the number of hours). No such distinction is made in the common core and hence, the two quantities in a ratio may or may not have a common unit. However, when there is a common unit, as in this problem, it is possible to add the two quantities and then find the ratio of each quantity with respect to the whole (often described as a part-whole relationship). (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Collection:
Illustrative Mathematics
Provider:
Institute for Mathematics and Education
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# Understanding Rational Numbers and Proportions

The three activities in this investigation center on situations involving rational numbers ... (more)

The three activities in this investigation center on situations involving rational numbers and proportions that students encounter at a bakery. These activities involve several important concepts of rational numbers and proportions, including partitioning a unit into equal parts, the quotient interpretation of fractions, the area model of fractions, determining fractional parts of a unit not cut into equal-sized pieces, and equivalence. (less)

Subject:
Mathematics and Statistics
Material Type:
Activities and Labs
Lesson Plans
Teaching and Learning Strategies
Collection:
Illuminations
Provider:
National Council of Teachers of Mathematics

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.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni ... (more)

.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni smelborp gnivlos rof seuqinhcet gnipoleved no si sisahpmE .scipot decnavda detceles dna scihparg retupmoc ,gnihcraes dna gnitros ,serutcurts atad ,sdohtem laciremun ,secafretni resu lacihparg ,stpecnoc gnimmargorp revoc smelborp gnimmargorp ylkeeW .esruoc eht fo sucof eht si tnempoleved dna ngised erawtfos detneiro-tcejbO .snoitacilppa cifitneics dna gnireenigne rof sdohtem lanoitatupmoc dna tnempoleved erawtfos latnemadnuf stneserp esruoc sihT (less)

Subject:
Science and Technology
Material Type:
Assessments
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Collection:
MIT OpenCourseWare
Provider:
M.I.T.
Author:
George Kocur
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