Relative Ratios

How many boys are in the class? Here is an introductory exercise describing ratios. The commentary shows different ways learners can approach the problem, using a tape diagram of boys to girls and using a table. The activity includes...

Challenge the class to determine whether two quantities are proportional. The second lesson in a unit of 22 has class members decide if two quantities have a proportional relationship. If a proportional relationship exists, the pupils...

Learners determine whether there is a constant multiple within the table through an instructional activity that presents a method for determining whether two quantities are proportional. Pupils analyze tables to determine if they...

Not all relationships with a pattern are proportional. Show your class why in the fourth installment of a 22-part series. The lesson builds upon previous parts and has pupils analyze tables to determine whether they represent a...

Upper elementary and middle school pupils fill out a chart creating six equivalent fractions and then compare them to six different objects and/or shapes. They group together 16 various terms related to ratios and proportions. Pupils...

Expose your students to the differences and vocabulary associated with both U.S. Customary Units and Metric Units. Sal defines 14 different terms of measure and then sorts them into two categories. He has numerous small side notes that...

Math scholars with a basic grasp of units of measure will appreciate this video. Sal breaks down the process needed to convert between metric units. He defines kilo, hecto, and deka, then uses that framework to assist him in determining...

Join Zoe and Sam as they use proportions to budget money for their Green Earth Club. Watch as they set up and solve a series of proportions using cross multiplication and division. A great resource that brings together prior knowledge of...

The use of rate, ratio, and proportion is illustrated in this video about action photography. An additional interactive element allows students to explore equivalent ratios equivalencies through enlarging and reducing images to compare...

Use Glencoe's randomly generated self-checking chapter test to assess your knowledge on ratios, proportions, and percents. Each question has a "Hint" link to help. After completing the test students can click the "Check It" button and...