Christian Lawson-Perfect

Christian Lawson-Perfect on Laws of Indices 8 years, 5 months ago

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Christian Lawson-Perfect on Laws of Indices 8 years, 5 months ago

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It looks like parts e and f had some constant coefficients in the advice which weren't present in the actual question, so I've removed those.

Otherwise, this looks good!

Christian Lawson-Perfect on Using Surds, Rationalising the Denominator 8 years, 5 months ago

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Christian Lawson-Perfect on Using Surds, Rationalising the Denominator 8 years, 5 months ago

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I changed the denominators for parts f,g and h from number entry to mathematical expression. While the answer is always a number, a student who's misunderstood might want to write a surd. You should let them fail!

I don't know why each line of the derivations ended with a comma, but this isn't conventional.

With those things fixed, this is a good question.

Christian Lawson-Perfect on Equations of parallel lines 8 years, 5 months ago

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Christian Lawson-Perfect on Equations of parallel lines 8 years, 5 months ago

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I've fixed a lot of typos, but otherwise this looks good!

Christian Lawson-Perfect on Division of fractions 8 years, 5 months ago

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Christian Lawson-Perfect on Division of fractions 8 years, 5 months ago

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Looks good!

Christian Lawson-Perfect on Substitute values into formulas 8 years, 5 months ago

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Christian Lawson-Perfect on Substitute values into formulas 8 years, 5 months ago

Saved a checkpoint:

Part c was wrong in a few ways! Given the formula for converting from Celsius into Fahrenheit, it asked the student to convert a temperature in Celsius into Fahrenheit - the other way round. It looks like your definition of the variable T_F was also wrong.

I've fixed those, and the rest of the question looks good.