Useful Websites
Addition
Addition using a structured number line (with numbers on) http://www.ictgames.com/numberlineJumpMaker/index.html
Addition using an unstructured number line (without numbers)
Addition using number bonds
http://www.ictgames.com/catapultCountOn/index.html
Vertical addition
http://mathszone.co.uk/calculating/
Subtraction
Subtraction on a number line
http://www.ictgames.com/numberlineJumpMaker/index.html
Expanded method of subtraction
http://mathsframe.co.uk/en/resources/resource/242/Column_Subtraction_using_Place_Value_Counters
Vertical subtraction
http://mathsframe.co.uk/en/resources/resource/48/column_subtraction
Multiplication
Multiplication as grouping
Multiplication using arrays
http://www.mumsnet.com/learning/maths/what-an-array-means-in-maths
Multiplication using the grid method
http://www.bbc.co.uk/bitesize/ks2/maths/number/multiplication/read/4/
Vertical Multiplication
http://www.bbc.co.uk/bitesize/ks2/maths/number/multiplication/read/5/
Division
Division as sharing and grouping
http://www.topmarks.co.uk/Flash.aspx?f=grouping
Division on a number line (video)
https://www.youtube.com/watch?v=_K_EcLUnv6k
Division as chunking
http://www.chunkydivision.co.uk/activity/index.htm
Short division
http://www.bbc.co.uk/bitesize/ks3/maths/number/multiplication/revision/3/