Stuck trying to remember the formal language of a geometric proof? Never fear, this handout has them all ready to go. The reasons are sectioned by topic so this handy guide is ready when you are to tackle those two column proofs. 

Though the walrus spends roughly one third of its time on land, it eats organisms that live on the bottom of the ocean. The first in a series of five, the lesson uses a variety of plant and animal cards to have scholars build an arctic...

Scholars find out how the government used propaganda to mobilize children to help in the war effort. Lesson exercises include analyzing a quote from Franklin Roosevelt, viewing propaganda images and posters, and participating in a lively...

Young scholars calculate the escape velocity of planets in our solar system and use that knowledge to calculate the escape velocity for NGC 2300 group. They then suggest reasons for the escape velocity to be higher than possible given...

Don't worry, optics is a light topic! The presentation covers reflection, refraction, fiber optics, mirages, prisms, rainbows, dispersion, mirrors, lenses, telescopes, diffraction, the human eye, and much, much more. Presentation is...

Lunar explorers perform an experiment to understand the size of the craters on the surface of the moon. They layer flour, laundry detergent, and cocoa powder in a pan to model the lunar surface. They drop marbles from different heights...

By 2018, 63% of US jobs will require a college degree or professional certificate. This is just one of the many great informational points you'll find on this handout, which you can use to inform your student body with the necessary...

This is an information-intense presentation for any science class you might be teaching that will study ionising radiation. The material is specific to cancer diagnosis and treatment, and one of the forty-two slides also touches on using...

Here is a stellar slide show for illuminating middle schoolers' minds on the topic of light! An interactive slide allows viewers to sort light sources by whether or not they are man-made. More objects are displayed and learners discover...

Make your classroom interesting by teaching or assessing through tasks. Deepen the understanding of Geometry and motivate young mathematicians. The task uses investigation with tennis balls and their container to prompt learners to...

The class gets to practice being a mathematician in ancient Greece, performing geometric application problems in the way of Eratosthenes. After following the steps of the great mathematicians, they then compare the (surprisingly...

Did you see that or did I imagine it? Optical illusions are often created with mirrors and lenses, and here is a presentation that covers many different types of mirrors and lenses and how they work. Flat, concave, and convex mirrors, as...

Challenge the class to prove that the dilation properties always hold. The instructional activity develops an informal proof of the properties of dilations through a discussion. Two of the proofs are verified with each class member...

Take a look at astronomy through the light lens. From radio to gamma, light waves exist in every corner of the universe. An enlightening PowerPoint presentation gives an overview of the different categories of light and then discusses...

True-false and multiple-choice questions are posed in Part A of this exam, covering the topic of electromagnetic radiation. In Part B, problems relating to refraction must be solved. This is a well-rounded exam that will help you...

A high-level introduction to fallacies of weak induction, including appeals to unqualified authority and ignorance, hasty generalizations, and weak analogies. Each fallacy is defined and shown with an example. For use mostly in college...

Key parts of an introductory paragraph (grabber sentence, connecting information, thesis) are highlighted in a presentation that uses color-coded sample paragraphs to illustrate how these parts combine to form a complete opening paragraph.

A parabolic mirror toy demonstrates how concave mirrors objects reflect light and produce a realistic image at their focal point. This resource probably doesn't explain any more than the printed insert that accompanies such an apparatus...

What is a prism? A place for light waves that commit minor refractions! The thorough resource includes three hands-on investigations covering light reflection and refraction; mirrors, lenses, and images; and optical systems. Subject...

Mirror, mirror on the wall, which is the fairest resource of them all? Individuals write and solve one-step equations for problems about angle measurement, including those involving mirrors. Both mathematical and real-world problems are...

Discuss how political postcards affected everyday people's thoughts and beliefs. Pupils continue a unit on the Dreyfus Affair as they engage in class discussion, watch a video, view a PowerPoint presentation, and fill out worksheets to...

Historical events do not occur in a vacuum. Such is the case of the Dreyfus Affair, where the connection between Captain Alfred Dreyfus, Emile Zola, and Hannah Arendt is fused by the events of the early 20th century. The informative...

Students experiment with reflections of two plane mirrors placed at a 90 degree angle to see what will be reflected.