A fantastic website resource that I've used in KS1 and KS2. It can literally be used however you wish. I&'ve used it to do times tables, number facts, multiples,factors, sums etc. It&';s a lovely plenary, and can be adapted to any maths topic.
This would be a useful plenary.
I use it in a concept attainment model for example I start by giving students three numbers that fit my set and highlight them in one colour (ie. red). I invite them to make a reasonable guess of others that might fit and if they do I colour them red also and if not they get a different colour (ie blue). As the numbers narrow down they need to start 'testing' their theory i.e I think it might be '25' because I think these numbers are all factors of 25 etc.
I have used this with sets like: even numbers, multiples, triangular numbers.
Numbered flowers 0-22
I laminated these cards.
How to play:
Children to sit in a circle
choose 4 number cards and spread them out in the middle of the circle
choose 2 children to play
give them a fly splatter
Teacher then call out a number - first child to splat it wins