https://www.topmarks.co.uk/maths-games/hit-the-button
https://www.timestables.co.uk/
https://www.topmarks.co.uk/Flash.aspx?f=countdowntimerv3
https://www.mathplayground.com/math-games.html
https://www.topmarks.co.uk/english-games/7-11-years/spelling-and-grammar
https://www.bbc.co.uk/cbbc/puzzles