Math Mammoth
Ratios and Proportions
In this math learning exercise, middle schoolers use cross multiplication to find the solutions to the given proportions. Then they write the proportions to solve the word problems.
Curated OER
Using Ratios
Students study the Golden Ratio and its relationship to Renaissance artists. After exploring proportions and ratios used by Renaissance artists, students create a mix of ten variations of color paint, and record the ratios of primary...
Curated OER
Balobbyland City Planners
Students create a mini city using proportions that fit a model human they construct using tin foil. They plan the city including a library, sports arena, living spaces, parks and businesses. When constructing the paper buildings, they...
Curated OER
Mathematics Within: Algebraic Patterns
Students comprehend that ratios and fractions are interchangeable. They compare ratios using common denominators, cross multiplication, and intuition. Students find equivalent fractions. They comprehend that equivalent ratios do not...
Curated OER
Measuring the Flagpole
Studets practice problem solving and comparison of quantities, ratios and prproportions. They develop a plan for determining the height of a flagpole complete with drawings and calculations. In addition, they complete a written...
Curated OER
The Golden Ratio
Seventh graders investigate a ratio found in nature and in numerous pieces of artwork throughout history. The lesson is cross-curricular and builds a sense of appreciation of design for students.
Curated OER
You Are Here
Students determine the relative size and distance of the planets in the solar system. They use ratios in their mathematical calculations to make models of the planets after discussing the relative sizes of the planets. They keep a...
Curated OER
Bag the Beans
Students are exposed to a wide array of concrete representations to help develop a foundation for the higher abstract ideas associated with mathematical inquiry. For this lesson, students will work with manipulatives (beans) to create...
Curated OER
Ratio Analysis
Students define ratios and how they apply in a business context. They practice ratios through an activity that involves financial data.
Curated OER
Relative Ratios
Students discover that proportions are made up of equal ratios each containing the same building blocks. They, using the Internet, apply their knowledge of direct relationships and proportions to problems in planetary science.
Curated OER
Teaching fractions & ratios with M&Ms
Students collect data using M&Ms, fill in charts, and write ratios and fractions for each color M&M.
Curated OER
Surface to Volume Ratios
Students measure the rate of diffusion and to calculate the surface area to volume ratios of varying cell sizes. The activity is very clearly organized with a useful student worksheet provided. They perform a lab experiment which is...
Curated OER
Ratios, Mars and the Internet
Students calculate real ratios that exist between the planets Earth and Mars. After a lecture/demo, students use worksheets and access Internet sites to do their calculations.
Curated OER
Learning About Ratios: A Sandwich Study
Students gain a concrete introduction to the concept of ratios. They demonstrate the ability to create ratios using peanut butter and jelly. They, in groups, construct 6 different sandwiches using different amounts of each food.
Curated OER
Math Club Worksheet #26
In this ratios worksheet, students complete a word problem dealing with ratios of numbers of boys to girls in the classroom. Students complete 1 problem.
Curated OER
A Ratio Word Problem
In this ratios worksheet, learners solve problems and fill in the blanks to make the sentences about the word problem true. Students complete 9 problems total.
Curated OER
Genetics Review
Students complete a Punnett square and list the probability and ratio of the offspring's genotype and phenotype in this genetics worksheet. There are 8 problems to complete, and are challenging to work on.
Curated OER
Equal Ratios
In this ratios worksheet, students write equal ratios to numbers, state if problems are equal or not, solve word problems, and more. This worksheet would be an excellent homework assignment.
Curated OER
What is a Ratio?
In this ratio worksheet, students use sets of shapes, animals and chips to solve a set of related ratio problems. Text book reference pages are given but text name is not.
Curated OER
What Is A Ratio?
In this math worksheet, students complete 9 problems where they find ratios of letters in a box and shaded circles of a group. Examples are given in this well-designed worksheet.
Curated OER
Family Letter - Foreign Currency and Exchange Rates: Proportions and Ratios
In this proportions and ratios learning exercise, students solve 6 short answer problems. Students find the foreign currency exchange rates for six countries. Students express the exchange rate as a proportion or ratio.
Curated OER
Converting Fractions & Decimals
In this fractions and decimals learning exercise, students convert fractions, decimals, percents, and ratios. Students complete 10 problems total.
Curated OER
Ratios
In this ratios worksheet, students are given the percentages and have to provide the ratios, fractions, and decimals for each number. Students complete 40 problems.
Curated OER
Ratios-Conversions
In this ratio worksheet, students complete a set of 4 charts, filling in conversions of ratios, fractions, percents or decimals. A website reference is given for additional activities.