Here are some videos that let you visualise how musical compositions are constructed.

A TEDEducation animation of John Loyd’s talk on ‘What’s invisible? – More than you think!’.

Lots of you are playing Minecraft – for those just starting out, here is a very well-made explanation of things work.

Here is a world that we’ll be installing on the school server so that you can explore ancient civilizations.

Get a sense of the scale of the universe as you zoom in and out from atoms to galaxies (best viewed full screen). An ‘interactive infographic’ from Numbersleuth.

Here’s a stop-motion animation demonstrating some architectural forms. It was made, in 1980, by Al Jarnow who worked on Seame Street and other TV programmes for children.

Timelapse film of night in a Namibian desert.

Here’s a public information film from 1951. Flower fairies versus germs!

We’ve linked to strange videos and animations by Cyriak before, and here’s a new one for a track by Bonobo.

The Museum of Mathematics has just opened in New York. Here is a video of some of the entertaining activities on the ‘Math Midway’.

January is a music-generating game where you play notes by catching snowflakes on your tongue. Try it out here (requires Flash)