Our staff and children love it
We use it in Y5 and Y6 and staff and children love it! One Y6 boy could not, for example, add two single digits without his fingers in September - he can now add any two 2 digit numbers, very quickly. He has gone from being someone who was glazed over like a rabbit in headlights, in maths, to being a confident, smiling, laughing member of the class. This is our first year of Power of 2 but I would recommend it wholeheartedly so far.