Transition to university

Christian Lawson-Perfect on Using compound units - speed 8 years, 4 months ago

Saved a checkpoint:

Split off from a larger question.

Heavily edited the advice to make sure no weird rounding errors happen, and fixed a fair bit of grammar.

The question now picks a physically reasonable speed and generates a time based on that.

Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 8 years, 4 months ago

Saved a checkpoint:

Set up the randomisation again so that all numbers are integers.

In part a, the $x$ coefficient of the second equation is a multiple of the coefficient in the first equation.

In part b, the LCMs of the $x$ and $y$ coefficients are strictly larger than any of the coefficients.

Chris Graham on Converting units of height (feet/inches/cm) 8 years, 4 months ago

Gave some feedback: Ready to use

Chris Graham commented on Converting units of height (feet/inches/cm) 8 years, 4 months ago

Part of a larger question. I've reorganised, given the unit conversion table to the student, and added steps. 

Christian Lawson-Perfect on Expand brackets and collect like terms 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Expand brackets and collect like terms 8 years, 4 months ago

Saved a checkpoint:

I've set expected variable names for the parts with more than one variable.

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

Gave some feedback: Ready to use

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

Saved a checkpoint:

Removed a lot of rubbish which must have come from a previous question, and renamed the variables so they make sense.

It's important that the coefficients of $x$ in the two factors aren't the same - otherwise, the order of the factorisation would be ambiguous.

Chris Graham commented on Converting units of length (km/m/miles) 8 years, 4 months ago

Split from a larger question on converting units. I've tidied the advice, reorganised the part, used the random names extension and added a bit more context.

Chris Graham on Converting units of length (km/m/miles) 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Transformation - Enlargement 8 years, 4 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Transformation - Enlargement 8 years, 4 months ago

Saved a checkpoint:

Not massively happy with this - the centre of enlargement is always $(0,0)$ and the scale factor is always $\pm 2$.

The diagrams aren't very precisely drawn either.

I've reworded the advice so it actually gives the answers.

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

Gave some feedback: Ready to use

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

Saved a checkpoint:

I've reworded a few things, replace the list of (all-male) famous people with the random names extension, and put the "identify the constant term" part above the "write down the constant term" part.

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

Gave some feedback: Ready to use