Take a rational look at solving equations. Learners watch a video presentation on solving simple rational equations that shows solving the equation along with finding excluded values. Viewers then practice the skill with the worksheets...

Comparing fractions, it is just not the same as comparing whole numbers. The video starts with fractions with common denominators and moves on to comparing fractions that are not as obvious. Scholars learn two techniques, cross...

Review three video clips for one major concept. The resource contains three short clips to introduce the idea of ratios and proportions and how to solve a proportion. After watching the video, partners use their noses to push pom poms...

Why are rates of reaction so important? Discover the answer to this, and many other questions, through a video from JFR Science. Pupils examine how, through the balanced chemical equation and experimentation, they can determine how fast...

Show the class two methods to solve proportions of fractions. The instructor shows that complex proportions can be solved by the normal method of cross-multiplying. It also shows another method where the complex fractions are simplified...

A model car, a life size car, now compare their sizes. Hmmm. Ok, set up a proportion and then figure out a ratio, and now you can express the relationship in terms of scale. Watch this video and the teacher will demonstrate just how to...

Are these two given ratios proportional? One quick and easy way to answer this question is to cross multiply the two values. If the products are equal then they are proportional ratios. If they are not equal then they are not...

Cross multiply and solve for the unknown variable in this proportion problem. Then use the division property of equality to isolate that variable and get your solution.

Trying to decide which method to use to compare the value of two fractions? You could find a common denominator, you could turn them into decimals, or you could cross multiply. Let's cross multiply because we like to multiply more than...

Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...

Learners who view this video will gain a stronger understanding of percent of change. The tutorial provides a formula and a sample problem. As the tutor completes the example, she explains and clarifies each step that she takes to find...

Use the least common denominator to solve rational equations with variables in the denominators of algebraic fractions. Learners can watch this video to find out how to do just this! An instructor solves 2 problems by finding the least...

A comprehensive video, this resource explains how to solve an equation when you have a variable in the denominator. The lecturer works through 2 different problems that represent 2 situations. From this video, pupils can gain knowledge...

Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...

A model car, a life size car, now compare their sizes. Hmmm. Ok, set up a proportion and then figure out a ratio, and now you can express the relationship in terms of scale. Watch this video and the teacher will demonstrate just how to...

First identify the parts of the word problem. Next identify the variable, decide what formula to use, figure out the quantities, insert the quantities into the equation, and now solve. There are many parts to solving this word problem so...

Another word problem to figure out. Well, first off you are trying to figure out the percent of something and this means your formula will be a proportional equivalent. Once you have the known terms in the correct places you can figure...

Learners who view this video will gain a stronger understanding of percent of change. This tutorial provides a formula and a sample problem. As the tutor completes the example, she explains and clarifies each step that she takes to find...

An explanation of the percent proportion formula. Identify the variables. Plug in the known values. Cross multiply. Use division property of equality to solve. A step-by-step example.

Video tutorial demonstrates how to solve a percent proportion using the means-extremes property of proportions to cross multiply. [1:09]

Watch this tutorial to learn about the means-extremes property of proportions that allows you to cross multiply, taking the product of the means and setting them equal to the product of the extremes. [5:59]

Professor Perez's virtual classroom provides examples that demonstrate how to solve proportion problems. [7:18]