NCETM CPD course on Representation and Structure
NCETM: Using mathematical representations at Key Stage 3
Jonathan Hall - teaching factors, multiples and primes with tiles
Roisin McArdle - Fractions: Multiple representations
The Importance of Bar Modelling - CPD resources
Bar modelling by Tom Manners
Algebra tiles - Part 1 by Tom Manners
Algebra tiles - Part 2 by Tom Manners
Book: Visible Maths by Pete Mattock
A collection of the best visual manipulatives