I guess you mean A+C?

]]>When I see a + sign, that looks like the letter ‘t’ so I know to use tan sub.

When I see a^2 – x^2, that is Subtraction that starts with an ‘s’ and so does sine function. “A ‘s’ is my sign to use sine.”

When I see x^2 – a^2, that also is Subtraction, so it will be either Sec or Sin function. I remember tmto use Sec here because the equation starts with an ‘x’ that sounds like sex and I always think of sex when I see secant abbreviated as secx.

I know, it sounds ridiculous and weird, but that is how I remember which one to use.

]]>Hi David, Every week we send to primary schools around Australia Maths worded problem sheets. The problems on the sheets reflect current events — pop stars, sport, movies, TV programs, special seasons (Christmas, Easter, ANZAC DAY, etc.), but are written in such a way that teachers love them, students love them, and they combine reading comprehension with building Maths problem-solving skills.

I’d be delighted to email you copies of our recent Aussie Maths 4-Level Packs, and to receive from you a crit of them. In particular, we’d be keen to know how, from your perspective, we can improve the content of our sheets. We see them as mainly for student use, but with a definite “professional development” component, particularly for younger primary teachers, many of whom struggle with some areas of the Maths curriculum. You can call me on (03) 8746 8332, or email me on robin.philbrick@bigpond.com

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