Classroom practice
Think U Know - http://www.thinkuknow.co.uk/
Primary and Early Years
http://www.thinkuknow.co.uk/5_7/
Hector's World - https://www.thinkuknow.co.uk/5_7/hectorsworld/
Secondary
http://www.thinkuknow.co.uk/11_16/
The Teachtoday website has some useful guidance on how teachers can support students to use new technologies safetly: