salem6sci

Recall what you observed in the "disappearing glass" demo. The stirring rod submerged in glycerin appeared to be invisible! In theory, if two materials have exactly the same refractive index, the light passes through without any (or minimal) scattering or refraction. The light travels straight because it cannot detect any difference in the two materials, hence the speed of the travelling light does not change (bend).

This quiz could be used as a building block for another quiz about the speed of light.

A website that provides science teachers with access to a series of diagnostic tests designed to identify the common misconceptions that students hold towards common science concepts. We should use this for pretesting our students.

A good mini-lab that can be used to teach kids about density.

Pour a glass of water and watch it turn to ice instantly! This step-by-step tutorial will show you everything you need to know about Instant Ice.

Want to make a glass of water freeze instantly on command? What is this supernatural power and who can use it? Discover the secrets to Ice-bending ... in real life.

The next time you're eating a big bowl of breakfast cereal, take a closer look at the ingredients. You'll find that it contains more than just wheat and corn. Look closely and you might find iron in your cereal... you know, the metal... the stuff used to make nails. Here's an experiment that proves you're eating iron for breakfast.

This is the entire collection of Steve Spangler science videos on YouTube. It is an amazing collection of simple videos connected to all aspects of the science currriculum.

This video might be great for teaching polarity and dissolving. We're going to show you how to make water-proof sand! It's fun, easy and awesome!

When you combine sand with a water-resistant chemical you create a hydrophobic substance that can clean up oil spills, give you awesome visuals, and quite possibly hours of fun.

Our resident science fiends will give the YouTube audience their big science treat each week with a live experiment where you can find out how to make food dance, power a light bulb with household objects and blow mega smoke rings!

At Head Squeeze, James May and his crack team of sci-geeks, maths-nerds and tech-heads provide answers to all your burning questions. From everyday curiosities to the latest mind blowing discoveries; our experts break it down for you and give their own left-field insights, sideways interpretations and bizarre, entertaining facts.

Head Squeeze is packed full of the latest and current developments in the world of science, technology, and maths. This channel is for anyone who wants to find out how the modern world works. Prepare to have your head squozen!

A REALLY cool experiment for showing kids the properties of reflection and refraction that uses Pyrex beakers, vegetable oil and Pyrex test tubes.

A quick mini-experiment that can help kids to learn about the density of air and the impact that temperature has on density. Similar to the balloon/bottle experiment that I already do in class.

"The short version, A tone outside the audible range of hearing for most people over the age of 30. This means that you can get phone calls and receive text messages in class or school without teachers hearing it. For more in-depth information on how the mosquito ringtone works, please see the Mosquito RingTone FAQ. For information on how to get the ringtone on to your phone, see our Mosquito Ringtone how-to Guide."

An interesting infographic that details some of the costs associated with space travel.

A nice visual demonstration of the action of a longitudinal or compressional wave.

A nice visual demonstration of just how a transverse wave works. Allows you to change the amplitude and frequency of the wave and see changes.

A great online home where students and parents can find projects to be involved in. Makes science active and real in easy and approachable ways.

NASA's website on the Hubble IMAX video. Includes webisodes and teaching materials.

"We love to see what microwaves do to common household items. We've shrunk potato chip bags and turned Ivory Soap into a fluffy soap souffle. What more could we want to do? We heard that it's possible to actually make a lightbulb light-up if you do it right. And sure enough, we figured it out."