New site from a UK maths teacher who wants to share the many resources he has created to aid conceptual teaching. Files are for interactive whiteboards (Smart Notebook and ActivInspire Flipchart format) and the majority come with a Word document lesson plan (these are great!), a PPT, and a worksheet.
There is also a section on proof and some Tarsia PDF resources.
Editor’s note (10/9/2018)
Sadly now a paying site although there are still some free number resources here.