Transition to university

Chris Graham commented on Using Laws for Addition and Subtraction of Logarithms 8 years, 4 months ago

This question had an unwieldy part b), asking the student to simplify an expression containing many log terms. This was set up in an extraordinarily complicated way with over a dozen variables and, as I'm sure we have other similar questions written in a less complex way, I have removed it and reorganised part a) to become two parts. The question is very straightforward now, but I think that's OK.

Christian Lawson-Perfect commented on Applied y-intercepts: Investing in boats 8 years, 4 months ago

I don't like how the graph works - why drag a slider and not the line itself?

The label on the slider says "p = ..." - what's p?

Christian Lawson-Perfect on Factorising Quadratic Equations with $x^2$ Coefficients of 1 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Factorising Quadratic Equations with $x^2$ Coefficients of 1 8 years, 4 months ago

Saved a checkpoint:

I've changed the parts so:

• part a always has two negative roots
• part b always has one positive root and one negative
• part c is the difference of two squares.

I don't think there was any point in the version which had a constant on the RHS.

I've added a marking script to check that the student's answer is factorised, rather than using string restrictions.

Christian Lawson-Perfect on The gambler's fallacy - probability of getting heads again after repeatedly getting heads 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on The gambler's fallacy - probability of getting heads again after repeatedly getting heads 8 years, 4 months ago

Saved a checkpoint:

Split from a bigger question.

The advice had confused trials with events.

Christian Lawson-Perfect on Which coin is more likely to be biased? 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Which coin is more likely to be biased? 8 years, 4 months ago

Saved a checkpoint:

Looks good!

Christian Lawson-Perfect on Theoretical Probability vs Experimental Probability 8 years, 4 months ago

Saved a checkpoint:

Looks good!

Christian Lawson-Perfect on Theoretical Probability vs Experimental Probability 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Probability of picking a particular colour ball from a bag 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Probability of picking a particular colour ball from a bag 8 years, 4 months ago

Saved a checkpoint:

Split off from a bigger question.

Christian Lawson-Perfect on Basic Probability Questions 8 years, 4 months ago

Saved a checkpoint:

I've split each part into a separate question.

Christian Lawson-Perfect on Basic Probability Questions 8 years, 4 months ago

Gave some feedback: Should not be used

Christian Lawson-Perfect on Probability of flipping a coin and getting a tails 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Probability of flipping a coin and getting a tails 8 years, 4 months ago

Saved a checkpoint:

Split off from a bigger question.

Christian Lawson-Perfect on Choose the probability of getting certain scores on a die 8 years, 4 months ago

Gave some feedback: Ready to use