The Math League
The Math League: Ratio and Proportion
This tutorial provides definitions and examples of ratios and proportions and features comparing ratios and converting rates.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Proporcionalidad
In Spanish. In this unit you will practice proportion. You will be able to distinguish whether quantities are or not in proportion and solve problems of direct and indirect proportion.
Other
P.u.e.m.a.c.: Que Es La Razon Aurea?
Find out how to calculate the Golden Ratio in this exercise.
Texas Instruments
Texas Instruments: Picturing Probabilities of Number Cube Sums
Students use ideas of ratio and proportion to investigate various ways to make a circle graph. Students create graphs to display the probabilities of the different sums that can be generated with two number cubes. [Requires Adobe Reader.]
Other
The Education Center: Breakfast It's a Big Deal!
This is a PDF worksheet where students use a real world scenario to find percents using proportional reasoning.
PBS
Pbs News Hour Extra: Lesson Plan: Planets in Proportion
Students learn about the distance and relative size of the rest of the planets compared to the Earth and Sun. The lesson plan includes an assessment and extension activities.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Quiz on Proportions & Similarity
The online assessment displays knowledge of concepts used in Geometry. The multiple choice questions test learners on proportions and similarity.
University of Cambridge
University of Cambridge: Maths and Sports: The Fastest Cyclist
As a coach for a long distance cyclist, can you come up with a race plan to help him win his ride from Lands End to John o' Groats? This activity is a more challenging follow-on from Nutrition and Cycling and is aimed at secondary...
Mangahigh
Mangahigh: Number: Working With Ratios
Deterime the ratios of amounts to one another and then simplify.
CK-12 Foundation
Ck 12: Measurement: Unit Scale to Find Actual Dimensions
[Free Registration/Login may be required to access all resource tools.] Identify unit scale and use unit scale when problem solving.
Khan Academy
Khan Academy: Proportional Relationships
Practice telling whether or not the relationship between two quantities is proportional by reasoning about equivalent ratios. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
Khan Academy
Khan Academy: Writing Proportional Equations
Practice writing equations to describe proportional relationships. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Arithmetic: Decimals as Percents
[Free Registration/Login may be required to access all resource tools.] Write percents as decimals and decimals as percents
CK-12 Foundation
Ck 12: Arithmetic: Fractions as Percents Grade 6
[Free Registration/Login may be required to access all resource tools.] Convert given fractions into percentages.
CK-12 Foundation
Ck 12: Arithmetic: Percents as Fractions
[Free Registration/Login may be required to access all resource tools.] Write percents as fractions in simplest form
CK-12 Foundation
Ck 12: Arithmetic: Prices Involving Discounts Grade 6
[Free Registration/Login may be required to access all resource tools.] Find percentages of a total price in order to determine a discount.
Purple Math
Purplemath: Converting Units
This resource provides a description and examples of how to convert between two units.
CK-12 Foundation
Ck 12: Arithmetic: Percent Equation to Find the Base B
[Free Registration/Login may be required to access all resource tools.] Use the percent equation to find the base, b in a proportion
CK-12 Foundation
Ck 12: Algebra: Proportions With Variable in the Numerator
[Free Registration/Login may be required to access all resource tools.] Use algebra to solve proportions with the variable in the numerator.
CK-12 Foundation
Ck 12: Arithmetic: Proportions
[Free Registration/Login may be required to access all resource tools.] In this lesson students recognize proportions as a statement of equivalent ratios. Students examine guided notes, review guided practice, watch instructional videos...
CK-12 Foundation
Ck 12: Arithmetic: Proportions
[Free Registration/Login may be required to access all resource tools.] In this lesson students write proportions and then solve proportions by using equivalent rates. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Arithmetic: Proportions to Find Dimensions
[Free Registration/Login may be required to access all resource tools.] In this lesson studnets find actual or scale dimensions using a given scale, ratio, or proportion. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Arithmetic: Proportions to Find Percent, P
[Free Registration/Login may be required to access all resource tools.] In this lesson students use a proportion to find a percent. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
CK-12 Foundation
Ck 12: Arithmetic: Proportions to Find Percent, P
[Free Registration/Login may be required to access all resource tools.] In this lesson students use proportions to find percents. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...