A topic in GCSE Maths and the Data Handling Module about Tree Diagrams. This screencast assumes knowledge of mutually exclusive and independent events (see Probability Part 1).
Screen cam with sound track showing how you switch off the space bar in PowerPoint and how you can link slides together with buttons by using action settings.
GCSE Maths lesson on applying Pythagoras' result about right angled triangles to problems. Finding longest side, finding shortest side, testing a triangle for right angle, mixed problems.
re-upload of the first rbl package in the hope that the conversion does not remove the first few screens. Stuff about designing screens for screen based learning materials.
Explains why and how to create a class blog using tumblr.com and how such a blog can help your students. Having problems with processing causing a delay between the slides and the audio - slides are behind audio for the first couple of minutes.
![Pythagoras\](http://img.youtube.com/vi/1ad8ybPA8fU/2.jpg "Pythagoras\")
