A directory of useful objects found on the web for teaching Maths.
http://www.teacherled.com/2014/04/27/column-addition-3-digits/ (Alternate link)
Demonstration, Interactive, Publisher, TeacherLED
A tool for demonstrating how to use the column addition method for three digit numbers.
20 June 2014 Edit: 1 October 2020
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Resources for learning maths at home.