Impossible, unusable, invisible

[walter b]

"High school students" are in fact pupils as your collected reactions show. Hiding cheat sheets is more important for them than math - that was and is ok in that age.

I may be wrong but for appreciating the benefits of RPN you need some minimum mathematical level - most kids will need to be 16 for it at least. And don't forget that most math textbooks used in school are strictly arithmetic in their approach, so for the majority attending a class an arithmetic calculator will be the way to go. After all, the fraction of math lovers is just a tiny fraction of overall population.

Based on this, I'd expect algebraic calcs in schools up to the level where kids start thinking themselves. So the whole "educational market" (as the USA defines it) is algebraic and will remain so. Young people visiting a university (i.e. real students) and studying something where math is more than just a (unloved) tool should be the target group of RPN and may appreciate it.

Just my 20m€

d:-)