The word “equivalent” is one of the most useful in mathematics and one of the most abused in mathematics education. The implication is that this one is not all ACARA’s fault. Nonetheless, the fact that it was predictable that ACARA would make a mess of it doesn’t alter the fact that ACARA made a mess of it. So, here we are. And a warning: this is a long post; there seemed no way around it.
It is no surprise that the Statistics strand of the new mathematics curriculum is thin. Still, it may be a surprise how thin it is.
The following, as near as we can tell, is the complete list of contents and elaborations that refer to “mean” or “median” or similar, and thus might (and still might not) require at least some mental or written computation. In other words, these are the only items we could find that seem to not simply be a matter of tabulating or “exploring” or “investigating” or “analysing”, the only items that consist of anything more than sitting around and chatting about stuff.
This is a short one and, necessarily, is WitCH-like. It is an elaboration in the new Curriculum that smelled wrong to us. We checked enough to confirm there was sufficient wrongness for the elaboration to be added to the Awfulnesses list, but we haven’t sorted it out further. The comments may be interesting (or non-existent).
This one may be of little interest to others, but it’s been bugging us.
A peculiar puzzle of writing mathematics is deciding when to use names and when to use numerals: should we write “two” or “2”? There is no one (1?) answer, and there are conflicting principles. Along with other rules, English style guides instruct that names should be used for small numbers, and numerals for large (with varying interpretations of “small” and “large”).