"How Tall, How Short, How Faraway" by David A. Adler

Find here a complete lesson dealing with the equations and graphs of proportional relationships, as well as what each individual point on such a graph represents. It may appeal to girls in particular, as the data details the growth rates...

Young mathematicians demonstrate their ability to solve word problems using numerical expressions in this short exercise. Given Brenda's daily workout schedule, students must write and solve an expression representing the amount of time...

How tall is the Empire State Building? Lead your class through a collaborative estimation activity to determine the number of quarters it would take to reach the top and teach the following concepts: human capital, human resources,...

Your algebra learners will pick up some solid algebra problem solving skills and a plan of approach for some typical types of word problems in this scripted worksheet that shows how to set up and organize each type of problem, create the...

Just how do Hagrid's measurements compare to those of your scholars? In an attempt to determine the size of Hagrid, the keeper of magical creatures in the Harry Potter series, the class collects data to find the average size of a...

A whole pizza is definitely better than a half, but is an eight piece pizza better than a six-piece pizza? Watch how one whole can be composed of infinite choices of numerators and denominator as long as they match. 

There are two methods for finding the percentage of a number. One is to use an equation, and the other is to use a proportion. This tutorial demonstrates with clear examples how to implement the proportion method. Insert this video into...

Subtracting an integer is as simple as adding the opposite value. Watch this video to see an example of how to change the signs and then add the two integers. Use this as a review after you have taught this valuable skill to your middle...

The instructor demonstrates how to plug-in given variables to rewrite an algebraic expression as a numerical expression. Follow the order of operation rules to simplify the numerical expression once you have plugged in those given values.

A source that includes a graph may not always be the best reliable. A short resource highlights how graphs and charts can be misleading. Learners view actual graphs and note the way the graph is distorted to make a point.