The blue group have been using this special dog to help them with their maths.  This is Squigglesworth:

Squigglesworth has three legs and helps us to understand 3 digit numbers better.  Today we used Squigglesworth to solve tricky addition sums up to 999 (and then beyond).  We then had to teach our friends how to use Squigglesworth.  We were very good teachers and were very, very proud of ourselves! 🙂