Curated OER
Dried Meat
Learners investigate the traditional method of drying meat used by Native Americans. They apply math concepts such as ratio, proportion, percent, and scientific notation to determine the amount of meat the is dried from an animal using...
Curated OER
Counting Blood Cells
Students observe number sense by participating in an estimation activity. For this blood cells lesson, students identify the importance of blood cells in the human body and discuss how tiny they are. Students utilize paper dots as a...
Curated OER
Daily Time Ratios
Young scholars track and record how much time they spend on each activity. In this spreadsheet lesson, students apply different functions using Microsoft excel to format cells and calculate the sum of their total time spent each day....
Curated OER
Family Letter - Foreign Currency and Exchange Rates: Proportions and Ratios
In this proportions and ratios worksheet, middle schoolers solve 6 short answer problems. Students find the foreign currency exchange rates for six countries. Middle schoolers express the exchange rate as a proportion or ratio.
Curated OER
Ratio Relationships
Students solve for the different ratio and proportion of a problem. For this geometry lesson, students show their knowledge of how to solve proportional relationships. They convert between percent, decimals and fractions.
Curated OER
Ratio and Proportion Crossword Puzzle
In this Algebra I activity, 9th graders solve a crossword puzzle that is based on the vocabulary associated with ratio and proportion. The one page interactive activity contains fourteen clues and is self checking.
Curated OER
Scale factors: Ratios and Proportions
Students create building and models using scale factors. In this geometry lesson, students apply the properties of ratio and proportion to solve problems. They identify the means and extremes property of cross multiplication.
Curated OER
Proportions a/b=c/d
Students calculate distance and proportion of objects. For this algebra lesson, students define proportion and how it is used in math. They solve the problem through guided instruction.
Curated OER
Robot Ratios
Students measure the activity and parts of a robot. In this algebra lesson, students explore ratio and proportion using their classroom. They apply properties of fractions as they cross multiply to solve problems.
Curated OER
A Blast From The Past
Students investigate ratio and proportion as they solve problems. In this algebra lesson, students calculate the percent increase on salaries and convert between decimals and percents to calculate. They rate job positions from 1936 to...
Curated OER
Spin Your Turbines
Students relate electrical power and how it works to math. In this geometry lesson, students analyze how a hydroelectric plant works and calculate the amount of electricity that is produced by a typical generator. This lesson uses...
Curated OER
Recipe: Unit Rate
Students solve problems using ratios and proportions. In this algebra lesson, students identify the unit rate and convert between fractions and decimals. They create graphs from their data.
Curated OER
Maps
Learners figure out the mileage from one state to another using a map. In this map lesson, students look at the scale factor and turn it into a fraction. They measure the distance between two cities and use the proportion to find the...
Curated OER
Origami Cube
Pupils compare two lengths using the area of a square. In this geometry lesson, students solve problems using ratio and proportion of the two shapes. They solve equations by taking the square root of both sides.
Curated OER
Belly Dancer Problem
In this math worksheet, students determine the rate at which belly dancers lose weight. This worksheet contains one multiple-step word problem. It may be used as a problem of the week.
Curated OER
Ten Multiple-Choice Rate, Ratio, and Proportion Problems
In this rate, ratio, and proportion worksheet, 7th graders solve ten multiple-choice problems. The solutions are provided by clicking on the "show answers" on the bottom of the page.
Curated OER
Solving Proportions
In this proportions learning exercise, students solve 20 proportions. Students multiply the means and extremes in order to find a missing variable.
Curated OER
Proportions
Students study proportions. In this mathematics lesson, students measure their body length, head length, and ratio of their body, write their findings on a group chart, and discuss how a person's head size or arm span are in proportion...
Curated OER
Currency Exchange
Students investigate the currency exchange rate. In this middle school mathematics lesson plan, student use proportions to exchange between the U.S. dollar and the euro. Students come up with a product they would like to buy and...
Curated OER
Currency
Students investigate currency and exchange rates. In the middle school mathematics lesson, students use ratio and proportion to convert from one type of currency to another. Students solve problems involving currency exchange.
Curated OER
Recipes and Ratios
Young scholars use ratio and proportions to adjust recipe size. In this middle school mathematics instructional activity, students investigate Native American food and adjust the recipe size for said foods to the number of servings...
Curated OER
Ratio and Proportion
Young scholars investigate ratio and proportion. In this middle school mathematics instructional activity, students write ratios and find equal ratios. Young scholars use ratio and proportion to distinguish between healthy and...
Curated OER
Percent Applications
In this percent application learning exercise, learners solve word problems containing concepts such as percent, proportions, sale price, discounts, interest, commission, tax, and more. Students complete 11 problems.
Curated OER
Proportional Segments Between Parallel Lines
High schoolers identify similar triangles. In this proportional segments lesson, students identify corresponding sides, set up ratios, and find the length of the missing side of a triangle. They use the parallel/proportionality...