# At Home Science Exeriments: Part 1 Refraction

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Quick, fun science experiments at home and there is little clean up!
Ding, ding, ding, we have a winner!

With summer winding down it's time to start thinking about back to school and getting those little brains ready to start thinking again.

My three lovelies and I decided to take a whack at doing some science experiments. We searched the internet,( ok pinterest)! And found a few really great ideas.  I let my kids choose our project based on time and materials we had.

For our first experiment they choose a glass of water and the changing arrow.

For this experiment you will need:
- a plain piece of white paper
- a clear glass full of water
- a black marker

Fold your paper in half so that it makes a tent and can stand on it's own behind your glass.  Next, have your kids draw an arrow in the middle of the paper, approx. 3" x 1". You will want a big, bold arrow. Don't be shy here.  The arrow should be about in the middle of your paper.  Then place the paper tent with the arrow behind your glass. DO NOT have the water in the glass yet.  Have your kids sit at eye level with the glass making sure they can see the arrow through the glass.  Ask your kids which way their arrow is pointing. Now slowly pour water into the glass, making sure to keep your eye on the arrow.

Watch what happens to the direction of the arrow?!?  Amazing, the arrow changes directions!

My kids were so excited we poured the water several times to watch this fascinating change.

Of course the arrow is not really changing.
It's Refraction- the change in direction of a wave due to a change in its transmission medium(wiki definition). The light is bending as it passes through a different density, air to water.

This is the equation for refraction.

You've just seen refraction in action!