I teach a group with low prior attainment.
One thing I noticed is that they often lack the knowledge that other students take for granted, which holds them back.
We were discussing the questions “Write as a decimal” and their lack of knowledge that really held them back.
I thought back to spelling tests I did as a kid, learning the fact, covering up and then being tested on the word. These seemed to quite effective, and I thought I could do a similar thing with maths. So I designed some maths ‘spelling’ tests. You can download them here. At the moment, there’s only 4 of them. Hopefully by sharing the PowerPoint and format, people can adapt them. If you do this, please share your versions below.