This sequence of tasks draws upon Gattegno’s tens chart. It captures some of the ways I use the chart with pupils. I’m not suggesting that teachers necessarily use this as a worksheet. I have found using mini whiteboards, in a whole class situation – encouraging moments for paired conversations to be productive. This set of tasks might offer some ideas of where to go.
I first learned about the tens chart from a blog post by Alf Coles which can be found here: https://nrich.maths.org/10741
Credit: @chrismcgrane84
Starting Points Maths 