Exploratorium
Touch the Spring
Concave mirrors and the images they produce are traditional topics in the physics classroom. This resource explains how to set up an investigation of them, and it provides you with the explanation of concepts.
Exploratorium
Hot Spot
Not only does a concave mirror focus light waves, it can also concentrate infrared radiation into a hot spot. If you have a small electric heater and such a mirror, demonstrate this for your physical science class.
Other
Boggle's World: Creative Writing Worksheets
A large collection of downloadable writing prompt worksheets to encourage students to develop their writing skills. Includes a variety of themes and some on special celebrations, such as Christmas and Halloween.
Other
Boggle's World Esl: Word Searches
A collection of more than 40 printable word search activities designed for ESL students. Searches are organized by level of difficulty (easy, intermediate to difficult) and cover a wide variety of themes, e.g., colors, verbs, the five...
Science Buddies
Science Buddies: Changing Constellations
Do you like to look up into the night sky? There are so many stars, it can be mind boggling. Some ancient people marked time by the changes in star patterns. We still use changes in constellation patterns to mark astronomical time. This...
Science Buddies
Science Buddies: Image File Types and Size
There are so many different ways to save an image file it can be mind boggling. If you want to know whether to save your favorite photo as a jpeg, bmp, gif, or tiff then try this simple experiment.
My Science Site
Optical Illusions
This resource contains some optical illusions that will boggle your mind as you try to figure them out.