KGy

Firefox on Android does allow you to run an adblocker.

You can get them from https://podtail.com too.

That is an interesting idea. It is the opposite of how my kid is learning math in the 4th grade today. They are taught to think about grouping and what the phrase represents in an attempt to make it more intuitive. Then if they don't know 7x4 then they can work it out by adding one more group of 4 to 6x4. Eventually the hope is that it will become rote memory. I learned it by memorizing the facts although I could have forgotten the other part of the lesson. I mostly remember times table quizzes.