First Circuit

This circuit is the easiest one, so easy perhaps, but don’t underestimate it. Children love to touch, and for them this is like magic.

What we need:

    - CR2032 coin battery (or any other 3v coin battery)
    - one led 

The circuit schema

Look at the battery, usually there’s a + sign on one of the sides. Take a led and look at his thin legs. Usually one leg is longer, that one has to be attached to the + side of the battery and the other to the - side. that’s all. easy no?

About this experiment

If nothing happens, or if your battery has nothing written on it, don’t worry, simply try changing the led position. with this batteries this is not dangerous at all. You can also let the children discover the correct position, just give them a led and a battery,and wait. We have to talk about polarity (the meaning of the + and the - signs), but not now. Whe are here to play, and educative games are too boring :P

fix it with tape and you got a Glowie. you can search for it if you need Ideas.

Adding a little magnet to the Glowie, converts it in a Throwie