We spent last week at the biggest education trade show in the world, BETT. In this final blog in our BETT series, we ask what evidence we should be expecting of ed tech companies. Every year at BETT I play a little game: I go up to stalls at random and ask how they know whether their product actually makes a difference to what or how well children learn. In the past, I have been met with blank stares or told that ‘children just love our product’. This year was different.
