I have noticed and ignored Professor Benjamin leveraging skip counting over the years and am starting to think that it actually a very practical method for drilling and wiring addition/subtraction/numeracy into the head.
I have been back at my math hobby again in the last few months and been refreshing the basics in geometry, trig, arithmetic, algebra before I start beating matrices and analysis back into my head.
In arithmetic my subtraction has always been poor as I have continuously avoided learning my complementts and made every subtraction an addition. Not this time.
I noticed Benjamin skip counting with three digit numbers as fast as he could talk and noted that developing this skill up and down forces you to think about complements and number relationships at a very simple level that feels like the precursor to better fluidity with the numbers.
I am going to practice for a few months and see how my head likes it and how far I can take it comfortably.
tl/dr seems like a good warmup exercise to go with others practice drills when you are out for a walk.
… Dr. Benjamin, If you are still following this forum, I remember you mentioning years ago that you did this with the kids, how well do you find it sticks with us seniors?
On a side note. I wish that they had never stopped teaching Euclid in schools. I saw a wonderful visual proof of the rule of cosines that use one of Thales Theorems which I then had to go and understand the proofs of.
So much of engineering, physics, math, rests on geometry, triangles and circles it is a shame that I have to learn about them at the end of my useful tenure instead of the beginning.