Curated OER
Ratios and Equivalent Ratios
In this equivalent ratios activity, learners simplify 6 ratios and write each in 2 different ways. Students solve 8 proportional equations using equivalent ratios to find a missing term. Learners solve 2 test prep questions regarding...
Illustrative Mathematics
Ratio of Boys to Girls
How many boys are in the class? Here is an introductory exercise describing ratios. The commentary shows different ways learners can approach the problem, using a tape diagram of boys to girls and using a table. The activity includes...
Centre for Innovation in Mathematics Teaching
Ratio and Proportion
Middle schoolers review the definition and rules for equivalent fractions. Additionally, they are introduced to equivalent ratios. They write examples of ratios from the board, and they come to the board to write the correct equivalent...
CK-12 Foundation
Percent of a Number: Acid Solution
Mathematicians answer five questions about percents, ratios, and proportions with help from an interactive graduated cylinder. Question types include multiple-choice, fill-in-the-blank, and discussion.
Curated OER
Solving Problems Using Equivalent Ratios
In this equivalent ratios worksheet, students solve word problems when given an equivalent ratio of the answer. Students complete 7 problems.
Illustrative Mathematics
Fruit Salad
Playing with values in this fruit salad problem allows learners to find out how many cherries were mixed in. Your middle schoolers can organize their thoughts in a chart before going into the equation. Eigth graders can skip the chart...
Waterloo Mathematics
Number Sense and Numeration: Ratio and Rate
Seventh-graders solve 20 various types of problems related to ratio and rate. They write ratios in simplest form for each given statement, to compare the area of two figures, and write two ratios equivalent to each ratio. Pupils express...
Curated OER
Ratios, Unit Rates, and Proportions
Explore the concept of ratios, unit rates, and proportions. Learners convert fractions and percents to decimals. They discuss rates and where they can be found in the real world. A hands-on experiment and numerous flash cards and...
Curated OER
Ratios: Interpreting the Phrase "Out Of"
Students explore the concept of ratios. They observe a website of Trident Gum that gives a real life example of ratios. Students practice ratio problems in three forms. They express ratios as a proportion and solve proportions using...
PBS
Working With Equivalent Fractions, Decimals and Percentages: Activities and Supplemental Materials
Reinforce math concepts using six worksheets that coincide with Virtual Math Girl's video instruction. The practice pages' objectives include writing equivalent fractions, decimal equivalents, and converting percents to decimals and...
Curated OER
Quiz: Creating Equivalent Proportions
In this proportion worksheet, students create a proportion from a set of four numbers. They write ratios that are equal to each other. This one-page worksheet contains ten problems.
Curated OER
Equivalent Proportions
In this equivalent proportion activity, students identify ratios written in three different forms (with a colon, with the word "to" and as a fraction). Students write the ratios as a proportion and then determine their equivalency. ...
Curated OER
Ratio, Proportion And Percent Worksheet
In this math worksheet, students examine the answers to a formal assessment focusing on the concepts of ratio, proportion, and percent.
Noyce Foundation
Photographs
Scaling needs to be picture perfect. Pupils use proportional reasoning to find the missing dimension of a photo. Class members determine the sizes of paper needed for two configurations of pictures in the short assessment task.
Curated OER
Art Class, Variation 2
Given a set of six paint mix ratios, artistic mathematicians produce an equation that relates the number of parts for blue paint to parts for yellow paint resulting new shades of green.
Utah Education Network (UEN)
Linear Graphs Using Proportions and Rates
Using a TI-73 or other similar graphing calculator middle school math majors investigate the linear relationship of equivalent proportions. After a brief introduction by the teacher, class members participate in a timed pair share...
02 x 02 Worksheets
Proportions
Cut-and-paste a great activity into your lesson plans. Scholars analyze real-world problems involving proportions. To change things up a bit they cut-and-paste quantities to create a proportion on their way to solving the problems.