For this similarity worksheet, students use the characteristics of similar figures to determine the length of one side of a polygon, the height of a tree, or the shortest side of a triangle. They also identify similar figures. ...

Students investigate currency and exchange rates.  In the middle school mathematics instructional activity, students use ratio and proportion to convert from one type of currency to another.  Students solve problems involving...

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.

Students measure the activity and parts of a robot. In this algebra instructional activity, students explore ratio and proportion using their classroom. They apply properties of fractions as they cross multiply to solve problems.

In this proportional division worksheet, students read through an example and complete 5 practice problems using proportional division. Students then complete 18 problems on their own in which they use proportional division. They can...

Tenth graders work as a grade to conduct a mock election. They tally votes in two different systems and discuss if proportional representation or straight counting of votes leads to a fairer outcome.

High schoolers begin the lesson by drawing figures doing different activities. As a class, they view artwork on Greek vases and discover how the political situations affect the drawings on the vases. They draw their own scene to place...

Why do all sizes of pictures not show the same thing? Class members analyze aspect ratios of various sizes of photos. They determine which sizes have equivalent ratios and figure out why some pictures need to be cropped to fit...

Say cheese! Can your class take a great photo and size it to fit any need? A career and technology-centered lesson plan demonstrates the correct way to resize images in Adobe Photoshop. Scholars view a presentation and work individually...

Take young mathematicians' understanding of percents into the real world with this series of word problems. Involving a variety of contexts from calculating scores on math tests and savings account interest, to determining sale prices...

Candy is a big business! Calculate the amount of money consumers spent on major holidays—Easter, Halloween, Christmas, Hanukkah, and Valentine's Day—based on the total amount of candy sales from 2011 and the percentage of each holiday's...

A cookie recipe is displayed as an example of proportional relationships, a clever way to introduce your chemists to stoichiometry! The steps of stoichiometry are listed, molar volume is explained, and then several stoichiometry problems...

Build an interest and appreciation for architecture in your young learners with this fun 10-lesson art unit. Engaging children in using their five senses, the class first observes the environment around them, paying...

Drive or take the school bus? Class members determine the amount each student would have to pay in a carpool situation. They then evaluate  the cost in a set of provided examples. I think I'd rather take the school...

Find the percent of the population that meets the criteria. The 17th segment of a 20-part unit presents problems that involve percents of a population. Pupils use tape diagrams to create equations to find the percents of subgroups...

Students are able to compare the effects of the following, using income as a measure of ability to pay: a progressive tax, a regressive tas, and a proportional tax. They explain how a mixture of regressive and progressive taxes could...

Students solve problems using ratios and proportion. In this algebra lesson plan, students analyze skittles and their different colors as they apply the properties of ratios and proportions to solve their problems.

In this atom worksheet, students read about Dalton's contributions to the structure of the atom. They answer five questions about Dalton's ideas, the law of multiple proportions and the law of definite proportions.

Students calculate the deer population using proportion. In this algebra instructional activity, students apply the concept of ratio and proportion to real life scenario.

Students collect data, interpret data summarize proportional reasoning. Students determine (with various alternate goods) the number of fish in a nearby pond. Students capture the goldfish crackers, deal with pretzels and then write...

In this chemical reaction principles worksheet, students read about definite proportions and the law of conservation of mass. Students read about how to balance a chemical equation. Then students complete 20 fill in the blank, 2 short...

For this early atomic theory worksheet, students answer 4 questions about the Law of Definite Proportions, the Law of Conservation of Mass and Dalton's Laws. Students are given 5 statements to determine if each true statement supports or...

In this word based proportions worksheet, 6th graders solve and complete 10 different problems that include determining various word based proportions. They determine the number of miles a person can travel in particular number of hours....

Sixth graders calculate wingspan and the body length of the birds and understand how they relate to how the bird flies. In this wingspan lesson plan, 6th graders also calculate their own "wing span" with their arms.