NinjaDevo 5/7/14
http://www.hawebmedia.com/activites/enrichment/stumpers/index.html
Maths Fallacy - can you find it? 7/7/14
http://web2.0calc.com/questions/step-1-let-a-b
Why is 2*10 and 2*11 the same thing?
http://web2.0calc.com/questions/why-is-2-10-and-2-11-the-same-thing