NRICH
This site from the University of Cambridge aims to provide learning support in mathematics for able children. It provides investigations, puzzles and aims to answer maths queries. Send in ideas and solutions.
Secondary and A Level Maths Teaching Resources
Resources for teachers and lecturers using the free-standing mathematics units at Foundation, Intermediate and Advanced levels and also the AS Use of Mathematics.
Angles
Activities on acute, obtuse, and alternate angles. They can help you to consolidate your knowledge of angles vocabulary.