online self checking chem worksheets - good for drill practice and student self-testing of concepts. Some is beyond the HSC course - but useful for the basics
I love this site as it breaks maths topics down into individual skills. Students can do 20 questions per day free, or families can join for about $10/month. Might be useful for students who need extra practice or get freaked out by the "race" timing in Mathletics
This is a fantastic presentation that gives an authoritative overview of how we could use Google Apps. Some amazing applications of the technology across key learning areas.
An impressive and comprehensive list of games that could be applied to all levels of schooling - Geography, HSIE and Social Studies classes could benefit from this list of games.