I am a retired self-isolating teacher of Mathematics (I taught Maths in grammar schools, a tertiary college, and degree-level communications theory), so for fun (?) I offered to tutor a friend's home-schooled 15-year-old. He should take an IGCSE next year. I am now "seeing" him (Zoom) four afternoons each week. His parents don't like Maths! They started him on a USA programme (trapezium v trapezoid, right-angle triangle v right triangle, etc. !?!?!?), but stopped for some reason. I vetoed the USA programme. I am trying to give him interesting work, but I also go back to Key Stage 2 for what he has missed. I have found past papers for him. He is actually quite bright, but not yet where Maths is concerned. He is now learning his multiplication tables (I test him on some at the beginning of each session), but still cannot do division. For example, he knows 3 times 5 is 15, but ask what 15 sweets shared between 3 people is, and he just guesses. I have got him to the stage where he doesn't freeze when percentages are mentioned - I had to teach him those because he was doing a different GCSE that needed percentages and data graphs. I got two second-hand copies of David Rayner's "Core Mathematics for IGCSE", but they are very slightly different editions, so I cannot refer him to an exercise in his edition :-( His family is also self-isolating. The graphs in my edition start explaining about y=mx+c which is not where he would be comfortable. So I need to find something with more relevance to the real world. I've done stopping distance of cars at various speeds, conversion of Celsius to Fahrenheit, kilogrammes to pounds. So now I'm looking for other suitable examples. When I started on Algebra, I had to have equations with apples and bananas, or similar. So he can attempt simultaneous equations as long as they are obviously about something real. I'm hoping to get him onto more abstract algebra with x and y in them. I haven't mentioned brackets yet. Sorry this has been so long, but I hope you can understand my problems. Any helpful suggestions gratefully received. Thanks a lot.