Dottie, a clumsy little fairy with glasses, red curls and a yellow raincoat is training to become a good tooth fairy. One night, it's her turn to make a visit to the house of a little girl named Lori, who had begun to doubt the existence of fairies. Dottie accidentally wakes up Lori as she is searching under her pillow, and even though Lori is very happy to see her, Dottie knows she's broken one of the most important rules of the tooth-fairies. Lori, who also wears glasses and has freckles, invites Dottie to stay in her home for a few days...

How soap cleans? Part of the Science Please! collection for children.

A clip in the Science Please. collection, The Wonderful World of Colour uses archival footage, animated illustrations and amusing narration to explain how the cones of the retina enable us to perceive the spectrum of colours.

Veronica experiences seven years of her future over the course of one week.

Why isn't it green, yellow or striped?

What lights your fire? Part of the Science Please! collection for children.

A clip in the Science Please! collection, Slippery Ice! uses archival footage, animated illustrations and amusing narration to explain why we slip on ice.

In the collection Science Please!, the first clip, entitled The Wind, explains the phenomenon of the wind with the help of archives, animation and narration.

Are cows a time bomb just waiting to explode? Part of the Science Please. collection for children.

Four strokes of genius.