Watch as we play in Windows media player
http://rogerfrost.com/chemistry/cttdemoJan05bb.wmv
How ACTT  works for teachers:
Teachers project the animated screens - on a whiteboard perhaps - to explain a reaction mechanism or why a compound dissolves. Most screens take two minutes to explain - a mechanism takes a bit longer. The overall idea is easy: you see a short movie split into sequences, but unlike a movie it pauses for you to make a point. You click the double bond molecule of ethene because red is the 'do' colour. The model changes and pauses.  

Here you can stop to ask questions. Why is bromine polarised? What's attracted to what? So what will happen next? The red bond clues us into what will move next and this you click. The bond mutates into electrons. This slider allows you to back-track through longer sequences.

 
How 'ACTT' helps learning:

To students, most 'slides' appear as a puzzle and the mechanism above is one such puzzle. The software is not a rolling lecture and requires some thinking: students discuss, use their texts, and actively take notes. Our standard 'task' is that they turn pictures into words. So in the example above, the students explain the mechanism, in their books, as if they were a teacher. They then draw the mechanism using symbols.

ACTT is full of surprises so that the task to 'take notes on amines' or write about the substitution of benzene is never the chore it seems. More it's a great way to learn.