On the Hertfordshire GfL site, which is one of my 5-star sites. Fantastic resources and links.
Includes drug education, National Healthy School Status, QCA units of work for PSHE and Social and Emotional Aspects of Learning (SEAL) materials.
Literally dozens of ideas for helping pupils get to grips with a new concept or to look at things in a different way. Found on the restuff.co.uk website but most methods would work equally well for any subject.
Some interesting PowerPoint files for introductions and plenaries, plus some useful files for KS2. Not a bad site but lacking in primary-level content.