This block is about 5 minutes long. It takes the form of a video to watch (it is worth a couple of watches). The video is presented by Professor Ruth Merttens.
This session will further staff understanding of how children in KS1 can develop misconceptions about subtraction and what can be sticking points at KS2. It explores:
Watch the video below. Click the [ ] symbol, on the bottom right of the video to watch full size.