• Subitising With Santa’s Little Helpers
November 28, 2014

Here we have a problem for students that incorporates Christmas festivities., The elves were playing tricks on Santa., He had to pack 12 presents onto the sled for a very important family. First Santa touched and counted his presents in twos to make two piles and then he went to fetch Prancer, his first reindeer. When he came back the presents had been moved into different groups., Santa said, “Now I will have to count them again”.,  , “No you won’t” the elves...

• Working With Teen Numbers Using 'Hidden Creatures'
November 11, 2014

Teen numbers have long been known to cause difficulties for young students. This is in part due to the fact the English language does not build in that numbers between 10 and 20 are made up of 10 and some more. This happens in larger numbers where, for example, we say thirty two and this shows that 32 is made of 30 and 2 more, whereas when we say fifteen it is far from clear that 15 is made of 10 and 5 more., The irregularity in our counting sequence, with no pattern in 11, 12, 13, leads many...