What Percentage of your Class is Right or Lef Handed?

What special relationship exists among the sides of a right triangle? Explore this relationship using a computer applet, cut-and-paste activity, and video tutorial to develop the Pythagorean Theorem and its significance to right triangles.

Amaze your classes with the ability to find side lengths of triangles immediately — they'll all want to know your trick! Learners use the Pythagorean Theorem and special right triangle relationships to find missing side lengths.

The volume of this geometry packet is obtuse! Packed with every topic and type of problem learned in the class, each page is nicely organized by section and contains a worksheet and sometimes reference examples. 

Can you believe that your learners will see anywhere from 20,000 to 40,000 advertisements this year? Make use of all that time with a five-part lesson about advertising techniques, which teaches individuals to observe the ways companies...

Introduce your classes to a new world of mathematics. Pupils learn to call trigonometric ratios by their given names: sine, cosine, and tangent. They find ratios and use known ratios to discover missing sides of similar triangles. 

Beyond reading and arithmetic, one of the most important skills for graduating seniors to have is fiscal literacy and responsibility. Start them on the right financial track with nine lessons that focus on a variety of important personal...

How can you safely model exponential growth and decay? A hands-on activity uses candies to model not only exponential decay, but also exponential growth. Exponential equations are fitted by hand and by use of a calculator to the data...

Is there a relationship between hand span width and height? Statisticians survey each other by taking measurements of both. A table that can hold data for 24 individuals is printed onto the worksheet, along with questions for analysis....

From understanding stock market performance and return on investment to identifying the costs and benefits of credit and avoiding debt problems, this is an absolute must-have resource for financial planning and literacy.

Raising the global temperature by two degrees may not seem like much, but the impact this would have on the planet is amazing. Follow along with this short video as it examines how even a small change to a system can turn its regular,...