WitCH 89: Proof Negative

VCAA’s new version of Specialist Mathematics contains “Proof” as a topic (which says everything one needs to know about VCE mathematics). A few commenters have alerted us to the fact that VCAA have now provided two videos: on induction (transcript and slides); and on proof by contradiction (transcript and slides). There are issues.

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WitCH 88: Unwarranted Confidence

One more from the 2022 Specialist Mathematics Exam 2. Belatedly, we’ve decided this one deserves its own post. It’s probably more of a PoSWW. But, for those weirdos who like to think about this stuff, there are probably also aspects to discuss.

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WitCH 87: Cannery Row

(The title is very clever, but you have to think about it.)*

This one is the last part of the last question of 2022 Specialist Mathematics Exam 2 (not online). It sparked a lot of discussion on the exam post, but seems worth its own WitCH. The question is clearly a mess, but what was intended, and how to think about the mess is not so clear, at least to us. (We showed the question to a professor of statistics, whose first reaction was “Ow!” We’ve applied the smelling salts, and we should be in possession of the professor’s second reaction soon.)

For clarification, we are (kinda sorta) told in the question stem that the masses of the empty cans are normally distributed, but we are told nothing else relevant, other than what’s given below.

Go for it (again).

*) Proving that the title is not really that clever.

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PoSWW 31: Really?

Honestly, we cannot believe it. We’ve checked it ten times and we still cannot believe. It’s from the 2022 Specialist Mathematics Exam 2 (not online), and nothing beyond the discussion on the exam post needs to be added. But, after last year’s screw up, and anyway, it has to be posted.

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Can Smart Victorian Students Avoid Mathematical Methods?

Note that our question is not whether smart Victorian students should avoid Methods. Given that Methods is the ugliest, stupidest, most aimless, digitally perverted, anally retentive, error-strewn, little Hitler managed, God forsaken heap of anti-mathematical garbage ever conceived, or even conceivable, of course all students should avoid Methods if they possibly can. The question is, can they?

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WitCH 84: VCAA’s Design Flaws

We still haven’t had time to take a proper look at the 2023-2027 VCAA Mathematics Study Design, but it smells very very bad.

A blog-reader has alerted us to a VCAA webinar on Mathematical Methods in the new study design. The video can be viewed here, with transcript here (Word, idiots), and PowerPoint slides here (PowerPoint, idiots). The study design is here (Word, idiots). The previous discussion on this blog can be found here.

The video made us nauseous.

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