Firstly an important reminder for World Maths Day fans – I update the World Maths Day post regularly – it’s almost time to register your students (from February 1st).
The Notes and Videos pages have both been updated, check Just Math Tutorials for example. The Useful Links page has been updated several times, including a new page directing students to commonly required constructions on Math Open Reference.
Mathematics Calculators and Tools has several online calculators.
There are many resources for starting and ending lessons described on Mathematics – Starters and Plenaries.