Does everyone know this already? Am I an idiot?
https://jamiesnotes.com/2020/05/count-to-144-with-two-hands/
@jamie
have you been taking your socks off this whole time. ;)
it did the rounds in my school at the same time as this https://www.archimedes-lab.org/Maths2_Multiplication.html
@basil Interesting. Thanks for the link. Youngest is doing times tables now. Will see if that helps.