Generate electricity: how does it work?

This is a torch that works with electricity generated by pressing a button:

This is how it works:

Let's have a look inside

Here you can see what happens inside any time you press the botton

....

In the following video there are instructions for building a simple generator

https://www.youtube.com/watch?v=Vmo7UUma1ko

Energy - Lesson 3: primary and secondary energy energy sources

Energy sources: primary and secondary

Read this internet page and fill in the table:

http://www.eniscuola.net/en/argomento/energy-knowledge/energy-sources/primary-and-secondary-sources/

 
PDF

Let's play with energy:

let's make a pinwheel

What happens if you blow on the pinwheel?

What energy are you simulating?

Let's make an aluminium spiral and put it over a candle: what happens?