If you don't learn algebra you can't learn calculus and calculus is the rock 'n' roll of mathematics
Even though not everone will use algebra when they leave school a good grounding in the subject gives one a well balanced education. Moreover, if someone is literate in algebra there will be times where the skill of mathematical manipulation will come in handy.
The same goes for physics. Even if someone's field of study at university, for example, has nothing to do with physics (American history, Chinese literature, Masters degree in basket weaving etc.) the problem solving skills learned in a first year physics course is a valuable tool for other academic pursuits.
There is also the matter of many countries being ahead of Australia in mathematical education. At my school where we teach (mainly) expatriate Taiwanese and Korean students, their intuative knowledge of algebra, even in grade six, is well ahead of Australian students at the equivelent grade. Even though I
am critical of East Asian teaching techniques (rote learning simply to pass exams), maths is one area they do excel in and one in which Australia can perhaps improve.
Easier said than done
