This is actually true. Kids in each generation are apparently more comfortable with technology, which naturally accelerates their awareness and knowledge. I can attest to it anecdotally - my kid is more attuned to the real world than I was at a much higher grade.
To some degree, I believe this. However, if you have to use mathematical logic (or actual math), the level of reasoning to use is far more simplistic at a third grade level than a 1990s sixth grade level. The same thing goes with vocabulary and grammar.
