National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Solving a Ratio With & Without a Diagram
A student is searching for a solution to a ratio question without using a diagram. Dr. Math helps to break it down both with and without a diagram. An understanding of fractions, multiplication, and basic algebra is necessary to get this...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percents Are Ratios
This Math Page tutorial explains how percents are ratios and then features a practice exercise.
Education Development Center
Tune in to Learning: Math Lesson Working With Ratios
Did you know that chefs must know how to use ratios in order to prepare meals? Learn the value of understanding how to write ratios, ratio proportionality, and ratios in lowest terms in this interactive lesson. Based on real world...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Comparing Ratios and Fractions
Dr. Math helps a student see the connection between fractions and ratios using the names of Flintstone characters. A clever approach that requires an understanding of basic algebra concepts.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Ratio, Proportion, and Percent
Students show comprehension of basic arithmetic skills. The online test assesses scholars on ratios, proportions, and percents.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Cake Recipe Ratio
Dr. Math has to go into the kitchen to solve this real-world problem. A student is looking for a solution to a ratio problem about baking a cake. You'll need to stir up your knowledge of ratios, fractions, decimals, proportions, and...
Oswego City School District
Regents Exam Prep Center: Ratios
The tutorial investigates ratios. Definitions, examples, and a practice problem with solution are included.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Proportionality
Acquire a deeper understanding of the concept of proportionality. Concise definitions, detailed examples, and an interactive worksheet to apply what you have learned.
Other
Seton Hall University: Ratio Test
This lesson gives an explanation of the ratio test with formlas and examples for the student to follow.
Purple Math
Purplemath: Basic Trigonometric Ratios: Examples
Demonstrates how to use trig ratios to do simple solving of triangles.
CK-12 Foundation
Ck 12: Arithmetic: Percents Grade 7
[Free Registration/Login may be required to access all resource tools.] Recognize a percent as a ratio whose denominator is 100.
Illustrative Mathematics
Illustrative Mathematics: 6.rp, 6.ee Fruit Salad
A fruit salad consists of blueberries, raspberries, grapes, and cherries. The fruit salad has a total of 280 pieces of fruit. There are twice as many raspberries as blueberries, three times as many grapes as cherries, and four times as...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Games at Recess
Students use ratios to answer three questions based on a specific set of data in this performance task.
Illustrative Mathematics
Illustrative Mathematics: 6.rp Voting for Three, Variation 3
Students use simple ratios to answer the following question: John, Marie, and Will all ran for 6th grade class president. The ratio of votes for John to votes for Will was two to one. Marie got exactly the average number of votes for the...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Voting for Three, Variation 2
John, Marie, and Will all ran for 6th grade class president. Of the 36 learners voting, the ratio of votes for John to votes for Will was two to one. Marie got exactly the average number of votes for the three of them. How many more...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Voting for Two, Variation 3
Students use ratios to solve the following performance task: John and Will ran for 6th grade class president. There were 36 students voting. John got two votes for every vote Will got. It was necessary to get more than half the votes to...
Illustrative Mathematics
Illustrative Mathematics: 6.rp Voting for Two, Variation 1
John and Will ran for 6th grade class president. There were 36 students voting. John got two votes for every vote Will got. How many votes did each get? Aligns with 6.RP.A.
Illustrative Mathematics
Illustrative Mathematics: 6.rp the Escalator, Assessment Variation
Students demonstrate their understanding of the concept of ratio and unit rate association with a ratio.
Virtual Nerd
Virtual Nerd: How Do You Solve a Word Problem Using Unit Rates?
Word problems allow you to see the real world uses of math! This tutorial shows you how to take a rate and convert it to a unit rate. Then, you can use that unit rate to calculate your answer. Watch this tutorial to learn all about it!
CK-12 Foundation
Ck 12: Geometry: Forms of Ratios
[Free Registration/Login may be required to access all resource tools.] This concept teaches students what a ratio is and how to use one. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Measurement: Distances or Dimensions Given Scale Measurements
[Free Registration/Login may be required to access all resource tools.] Read and interpret scale drawings and floor plans to find scale dimensions and actual dimensions
CK-12 Foundation
Ck 12: Arithmetic: Ratios
[Free Registration/Login may be required to access all resource tools.] In this lesson students write ratios to model real-world scenarios. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Arithmetic: Percents Grade 8
[Free Registration/Login may be required to access all resource tools.] recognize and write percents as part of a whole out of 100.
BBC
Bbc Skillswise: Percent and Fractions: Ratio and Proportion
Activities and factsheets exploring ratios and proportions in everyday life. Interactive, colorful, and fun.