Lego math games - what a great idea! - Make sure you have enough spare Lego blocks to complete the other side of the pattern and then see how long it takes you to find all the right pieces. This lets you play and learn, working with ideas about colour, shape, size and orientation.
Another pinner said: I add each cat chased 8 mice (ounces). I know it doesn't start with O, but they are small and so are ounces. Plus the kids always think it is so funny that the kingdom/castle becomes infested with mice!---I teach the Big G, but I like the story that goes with it...might help some kiddos!