Learning About Ratios: A Sandwich Study

How much sugar is in one bottle? Pupils use double number line diagrams to determine the amount of sugar in a 1L bottle of cola. The teacher leads a discussion on ways that double number lines can be of assistance in solving a...

Pupils continue the study of ratios by creating ratios from a context. The contexts present more than two quantities, and scholars create contexts that match given ratios. 

Nothing sounds more delicious than fruity math! Young mathematicians solve fraction and multiplication word problems about berries, grapes, and more. 

Look at rates from a general perspective. The 17th part of a 29-part series provides problems that help pupils develop more general ratios from given rates. Scholars determine unit rates and ratios that are associated with given rates....

Only in math problems do people buy 18 cans of tennis balls and no one wonders why. Scholars solve for the number of total tennis balls given the ratio of balls per can. This and other ratio word problems in a PowerPoint from Grade 6...

Sal defines ratios. Then he shows how to write ratios three different ways. This concept is then demonstrated with four examples for finding quantities by using ratios.

Finding a unit rate is imperative to the smart shopper! A video lesson introduces learners to a comparison of ratios. Initially, the instructor manipulates the ratios to have a common denominator for better comparison. He then explains...

And the beat goes on. The installment of the Math at the Core: Ratios series introduces time signatures in music. A musician shows the relationship between different types of musical beats. Working in pairs, classmates create beat...

Bring on the lights! Using an interactive, characters try to figure out how to light a skate park by examining area and ratios to determine the number of solar panels needed to power them. Pupils design a house with a roof to hold solar...

The teacher demonstrates how to set up a word problem into a ratio of fractions. There are many ways to solve this equivalent ratios problem and the instructor chooses to find a multiplier to find the missing value.