|Chronology||Current Month||Current Thread||Current Date|
|[Year List] [Month List (current year)]||[Date Index] [Thread Index]||[Thread Prev] [Thread Next]||[Date Prev] [Date Next]|
I would venture to guess that the students in your private prep school
probably are more likely to be at the formal operational level than those
in average public schools, so your 30% estimate may be a bit high.
According to Shayer & Adey students need to be at the formal operational
level to be able to understand a 3 variable equation such as F=ma. Since
only about 30% of US students are capable of understanding proportionality
when they are seniors in HS, algebra is literally impossible for most
students even in HS. Pushing advanced abstract concepts down to lower
grades is absurd when students do not understand proportional reasoning or
Incidentally the 30% figure comes from my testing of students in a college
prep private school in Houston.
If this seems a bit late on the topic, it is because I have been on a
boat tour of Russia for 2 weeks.
John M. Clement