Lesson Plan
Curated OER

How Big Is That Star?

For Teachers 6th - 9th
Aspiring astronomers study stars. They compare stars and explain the relationship between radius, mass, and diameter. By creating a star simulation, they discover how a binary star system's orbit can cause changes in the observed...
PPT
Curated OER

Who Wants to Be a Champion

For Teachers 5th - 6th
Challenge your learners with this game focusing on problems involving ratios and calculating percentages. In this game, learners have to identify a ratio, convert ratios to a fraction, convert a percent to a fraction, and answer word...
Assessment
1
1
Balanced Assessment

Egyptian Statue

For Students 9th - 12th Standards
Investigate the proportional relationships of length, area, and volume. Learners use the dimensions of rectangular prisms to create ratios and proportions. They compare the different ratios to solve more advanced problems.
Interactive
CK-12 Foundation

Special Triangle Ratios: Special Right Triangle Ratios

For Students 9th - 12th Standards
Go from one side length to any other side length with special right triangles. Individuals use the interactive to investigate the ratio of sides in 45-45 and 30-60 right triangles. Scholars make generalizations about the types of special...
Instructional Video20:08
2
2
Flipped Math

Trig Ratios

For Students 9th - 12th Standards
Take ratios of sides to a new level. Pupils learn the definitions of the three basic trigonometric ratios in right triangles. Using the definitions, scholars find missing lengths in right triangles, based on a known angle. Individuals...
Worksheet
Curated OER

Equivalent Ratios

For Students 5th - 6th
In this ratios learning exercise, students complete a variety of online exercises involving writing twelve ratios in their simplest form, writing nine ratios in the form of 1:n, writing six ratios in the form n:1 and solving seven ratio...
Worksheet
Curated OER

Ratios

For Students 3rd - 5th
In this ratios worksheet, students write the ratios for 3 number sentences, solve 2 word problems and change 5 ratios to fractional notations.
Worksheet
Curated OER

The Math of Science: Ratios and Proportions

For Students 7th - 9th
In this ratio and proportion instructional activity, students learn about ratios and how to solve problems with ratios and proportions. They solve three problems using what they learned.
Lesson Plan
Curated OER

Using Ratios

For Teachers 8th - 10th
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...
Worksheet
Math Mammoth

Ratios 1

For Students 5th - 6th
In this ratios learning exercise, students complete several activities for ratios. Students enhance their understanding of ratios and percents.
Lesson Plan
Curated OER

The Golden Ratio

For Teachers 7th
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.
Worksheet
Curated OER

Ratio of Similarity

For Students 10th
In this ratio of similarity worksheet, 10th graders solve and complete 20 different problems that include defining the ratio of similarity in various figures. First, they determine the ratio of similarity for large and small pairs of...
Worksheet
Curated OER

Equivalent Ratios (Practice 18.2)

For Students 5th - 6th
In this ratios worksheet, students solve 22 problems in which equivalent ratios are found or ratios are expressed in simplest form.
Worksheet
Curated OER

Ratio, Rates and Percentages

For Students 8th
In this ratio, rates and percentages learning exercise, 8th graders solve 22 various types of problems related to ratios, rates and percentages. They first write ratios in lowest terms and describe each of comparison stated. Students...
Worksheet
Curated OER

Ratios, Rates and Percentages

For Students 6th
In this ratios, rates and percentages worksheet, 6th graders solve 16 different types of problems that include writing each ratio as a decimal and a fraction in lowest terms as a percent. They also arrange numbers in ascending order and...
Worksheet
Curated OER

Equivalent Ratios (Homework 18.2)

For Students 5th - 6th
In this ratios worksheet, students solve 20 problems that pertain to equivalent ratios and writing ratios in the simplest form.
Worksheet
Curated OER

Math Regents Exam Questions: Verbal Problems Involving Ratio

For Students 9th - 12th
In this ratios worksheet, students solve 6 multiple choice and short answer word problems.  Students use ratios of boys to girls and deer to foxes to find the number of boys, girls, deer, and foxes in a given population.
Worksheet
Curated OER

Proportional Reasoning: Ratio Applications

For Students 8th
In this ratio applications worksheet, 8th graders solve and complete 24 various types of problems that include proportional reasoning. First, they solve each pair of similar figures for the given variable. Then, students write and solve...
Lesson Plan
Curated OER

The Golden Ratio

For Teachers 9th - 11th
Students solve problems using ratios and proportions. In this algebra lesson, students verify proportions, solve for the unknown and use real life scenario to model proportion.
Lesson Plan
Curated OER

Surface to Volume Ratios

For Teachers 9th - 12th
Students measure the rate of diffusion and to calculate the surface area to volume ratios of varying cell sizes. The lesson is very clearly organized with a useful student worksheet provided. They perform a lab experiment which is...
Worksheet
Curated OER

Rates and Ratios

For Students 7th - 9th
In this rates and ratio learning exercise, students determine the ratio for a given situation. They use proportions to solve problems. This two-page learning exercise contains 4 multi-step problems. Answers are provided on the last page.
Worksheet
Curated OER

Ratio and Proportion

For Students 9th - 12th
In this ratio and proportion activity, students solve 22 short answer and multiple choice problems.  Students use rates, proportions, and ratios to solve each problem.
Worksheet
Curated OER

Simplifying Ratios

For Students 10th
In this simplifying ratios worksheet, 10th graders solve and complete 24 various types of problems. First, they complete each ratio and reduce when necessary. Then, students find the length and width of each rectangle described. They...
Lesson Plan
Curated OER

Mixing Up Ratios

For Teachers 9th - 10th
Students solve problems of ratio and proportions using hands on. In this algebra lesson, students vary the concentration of a fruit drink using parts of a ratio.

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