Curated OER
Problem Solvers
Fifth and sixth graders compare decimals to the place-value structure in the base-ten number system. They represent fractions as parts of unit wholes, as parts of a set, as locations on a number line, and as divisions of whole numbers....
California Education Partners
Speedy Texting
Model the effects of practice on texting speed. Pupils develop a linear equation that models the change in texting speed based on the amount of practice. The sixth performance task in an eight-part series requires learners to solve and...
EngageNY
Special Relationships Within Right Triangles—Dividing into Two Similar Sub-Triangles
Why are right triangles so special? Pupils begin their study of right triangles by examining similar right triangles. Verifying through proofs, scholars recognize the three similar right triangles formed by drawing the altitude. Once...
Bowland
Explorers – Patrol Services
Far out — plan a trip to space! Aspiring mathematicians steer a space vehicle through an asteroid field, calculate currency exchanges to buy provisions, and determine placement of charges to blow up asteroids. Along the way, they learn...
Mathematics Assessment Project
College and Career Readiness Mathematics Test C2
Scholars apply knowledge learned over their high school math courses in order to determine their college readiness. The 20-page resource emphasizes applied problem solving.
Education Development Center
Similar Triangles
Model geometric concepts through a hands-on approach. Learners apply similar triangle relationships to solve for an unknown side length. Before they find the solution, they describe the transformation to help identify corresponding sides.
Curated OER
Ratios and Proportions
Learners solve problems involving percents and ratios. In this algebra instructional activity, students convert decimals to percents and percents to decimals. They solve problems involving algebraic expressions and four different kinds...
Curated OER
Proportions 1
In this proportion worksheet, students find the missing side of 4 shapes that are similar to their mate. Shapes include triangles and quadrilaterals,. In the second part of the worksheet, students use the scale factor to find missing...
Curated OER
Chapter 8 Extra Problems Worksheet: Similar Triangles
In this similar triangles activity, students solve 6 similar triangles. Students use proportions to solve similar triangles and similar rectangles.
Curated OER
The Unitary Method
In this math worksheet, students are given a proportion statement. They use this ratio to solve related questions. Students compute the amount of food needed for one person and then for 500 people. Students convert between Euros, Pounds,...
Curated OER
Rates and Ratios
In this rates and ratio worksheet, students determine the ratio for a given situation. They use proportions to solve problems. This two-page worksheet contains 4 multi-step problems. Answers are provided on the last page.
Curated OER
Simplify Ratio: Word Problems
For this finding the ratio in word problems worksheet, students use the work space to solve and simplify. Students solve four problems.
Curated OER
Equivalent Ratios (Practice 18.2)
In this ratios worksheet, learners solve 22 problems in which equivalent ratios are found or ratios are expressed in simplest form.
Curated OER
Points on a Line Segment
In this geometry learning exercise, 10th graders solve a problem relating to the length of a line segment. The location of the points on the segment is given in terms of ratios. The one page learning exercise has one problem with the...
Curated OER
Kuta Software - Infinite Geometry: Similar Triangles
For this similar triangles worksheet, students solve 20 short answer problems. Students determine if two given triangles are similar. Students determine the type of similarity given two triangles. Students are given a sketch of the...
Raytheon
Probability, Percent, and Proportion
In this probability and predictions learning exercise, students read 1 page of facts, then solve 8 pages of problems related to probability, with answers keys included.
Curated OER
Solving Percent Problems with Proportions
Seventh graders explore the concept of percent problems. In this percent problem lesson, 7th graders use proportion equations to solve percent problems. Students find percentages of numbers and use proportions to determine percents in...
Curated OER
What percent of ratio is proportion?
Ninth graders investigate the concepts of ratio and proportion.They solve examples with the teacher for ratios and proportions. A basic fraction review is used for a warm up in this lesson. The primary focus of the lesson appears to be...
DiscoverE
Build a Bobsled Racer
Host a design challenge of Olympic proportion! Junior engineers build their own bobsleds using simple materials. The activity focuses on kinetic and potential energy and how the center of mass affects motion on a downhill track....
Curated OER
PLANETS IN PROPORTION
Students discover scales for both the solar bodies' relative sizes and their distances from the sun. They find equatorial circumference and volumes of their solar bodies. Students apply estimation strategies and proportioanl reasoning to...
Curated OER
Leveled Problem Solving Using Proportions with Similar Polygons
In this proportions and similar polygons worksheet, students solve the problems that use proportions, rations, fractions, and similar polygons.
Curated OER
Solving Problems Using Proportions
In this math worksheet, students solve the problems that are in word form in order to find the proper type of proportion for the solution.
Curated OER
Proportion to Percentage
In this division worksheet, 7th graders divide the proportion number given by the whole and move the decimal point to place to find the percent value.
Curated OER
Ratios and Proportions
Seventh graders explore the concept of ratios and proportions. In this ratios and proportions lesson, 7th graders work in groups to measure their heights and their arm span. Students compare their height to their arm span. Students make...
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