Worksheet
Curated OER

Ratios: missing number

For Students 5th - 8th
In this ratios worksheet, students find the missing number in each ratio for numbers up to 10. Students complete 7 ratio problems.
Worksheet
Curated OER

Family Letter - Foreign Currency and Exchange Rates: Proportions and Ratios

For Students 6th - 8th
In this proportions and ratios worksheet, 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.
Worksheet
Curated OER

Proportion Game

For Students 4th - 6th
In this proportion game learning exercise, students read the guideline regarding a game pertaining to ratios and play it with a partner.
Lesson Plan
Curated OER

Proportions

For Teachers 7th
Seventh graders participate in a lesson that focuses on having them solve different proportions. The lesson includes an example that the teacher can work from in order to deliver direct instruction.
Lesson Plan
Curated OER

Shots, Standings, and Shopping

For Teachers 6th - 8th
Rates and ratios can easily be applied to real-world situations. Learners explore a series of websites in order to procure comparable data. They define ratios and rates, view videos, and use the internet to explore how ratios and rates...
Lesson Plan
Curated OER

Exploring Biomes Lesson 3: Endangered Biomes

For Teachers 6th - 10th
Future environmental scientists compare data from two different conservation strategies. Alone this lesson is sufficient, but as part of the Exploring Biomes unit produced by the Arizona Fish and Game Department, it becomes top-notch. 
Worksheet
Curated OER

Ratio, Proportion And Percent Worksheet

For Students 6th - 8th
In this math worksheet, students examine the answers to a formal assessment focusing on the concepts of ratio, proportion, and percent.
Worksheet
Curated OER

Ratio, Proportion And Percent

For Students 6th - 8th
For this math worksheet, students evaluate and compare the ratios. They also compare the fractions by solving the proportions.
Lesson Plan
Curated OER

Applications, Proportions, and Problem Solving

For Teachers 6th - 9th
In this math worksheet, students find the solutions to the problems involving proportions. They also compare the similar triangles.
Worksheet
Curated OER

Proportions

For Students 7th - 8th
For this proportion worksheet, learners identify equivalent fractions and solve proportions. This one-page worksheet contains ten problems.
Lesson Plan
Curated OER

Ratios

For Teachers 6th
Sixth graders investigate the concept of ratios and how they can be used to represent the comparison of quantities. The lesson is taught using a table or graph to compare two categories of data.
Worksheet
Curated OER

Solving Problems Using Equivalent Ratios

For Students 7th - 12th
In this equivalent ratios worksheet, students solve word problems when given an equivalent ratio of the answer. Students complete 7 problems.
Lesson Plan
Illustrative Mathematics

Finding a 10% increase

For Teachers 6th - 8th Standards
A quick problem to test your mathematicians' knowledge on percent increase. Two different solutions are provided, mental math and computing. Ask your learners to include a description of what they did to supplement their answer.
Lesson Plan
EngageNY

Ratios of Fractions and Their Unit Rates 2

For Teachers 7th Standards
Remodeling projects require more than just a good design — they involve complex fractions, too. To determine whether a tiling project will fit within a given budget pupils calculate the square footage to determine the number of...
Assessment
CCSS Math Activities

Smarter Balanced Sample Items: 7th Grade Math – Claim 3

For Teachers 7th Standards
Does the explanation make sense? Sample items highlight claim three, communicating reason, in the Smarter Balanced assessments. Teachers use the 16 items to help show pupils the importance of communication and reasoning within...
Worksheet
Curated OER

Stoichiometric Relationships

For Students 10th - Higher Ed
In this reactions worksheet, students learn how to solve stoichiometric problems based on the mole ratios of a balanced equation. Then students complete 7 problems.
Interactive
Curated OER

Similar Polygons

For Students 7th - 8th
In this similar polygons worksheet, students identify the corresponding sides of polygons.  They use proportions to solve problems.  Students determine the scale factor of similar figures.  This two-page worksheet contains...
Worksheet
Curated OER

Kuta Software - Infinite Geometry: Similar Triangles

For Students 9th - 12th
In this similar triangles worksheet, learners solve 20 short answer problems. Students determine if two given triangles are similar.  Learners determine the type of similarity given two triangles. Students are given a sketch of the...
Unit Plan
National Security Agency

It's Probably Probable

For Teachers 6th - 8th Standards
Learners make predictions and draw conclusions from given information as they learn the meaning of probability in this vocabulary-rich, integrated activity that presents a variety of teaching strategies to motivate and reach...
Lesson Plan
Curated OER

Ratios (Cost of a Habit)

For Teachers 6th - 8th
Students consider an individual habit and its cost. They study ratios and proportions, and use that knowledge to calculate the cost of a habit over extended periods of time. write a detailed comparison of the costs.
Worksheet
Curated OER

Proportional Ratios

For Students 9th
In this proportional ratios worksheet, 9th graders solve 10 different problems that include sets of fractions in each. First, they determine if the product of the means is equal to the product of the extremes. Then, students solve each...
Lesson Plan
Curated OER

Decimal Fractions of a Set

For Teachers 6th
Sixth graders practice problem solving equations of fractions, ratios and proportions, addition and subtraction stage 6 as well as advanced additive. Emphasis is placed on decimal fractions and then they convert fractions to decimals.
Worksheet
Curated OER

Comparing Ratios

For Students 6th - 7th
In this comparing ratios worksheet, students solve and complete 3 different problems using the screens shown. First, they write a ratio that compares the shaded part to unshaded part illustrated. Then, students use the same grid to...
Assessment
Noyce Foundation

Photographs

For Teachers 6th - 7th Standards
Scaling needs to be picture perfect. Pupils use proportional reasoning to find the missing dimension of a photo. Class members determine the sizes of paper needed for two configurations of pictures in the short assessment task.