What can this graph tell me?

Work in groups of three. Each person has a number needs to add to ten. https://nrich.maths.org/192/note   What three numbers{...}

Launch: Put timer up. Stand up when you think it is 1 minute. What is 1 minute? How many times{...}

Give kids counters in a circle. Say a number, kids make that number. How many different ways did we find?{...}