Transition to university

Christian Lawson-Perfect on Arithmetic sequences in an ice cream shop 8 years, 5 months ago

Gave some feedback: Has some problems

Christian Lawson-Perfect on Arithmetic sequences in an ice cream shop 8 years, 5 months ago

Saved a checkpoint:

Part d should follow on from c, using the same sequence, and only ask for one (large) term. As it is, I've got to work out the formula for two new sequences and only get marked on the final answer.

Has something gone awry with the ice cream question? Jenny's friends both have tickets with larger numbers than hers. How does that help work out how many people got strawberry before Jenny? Unless you don't want to say explicitly how many flavours there are, that information is sort of a red herring.

Chris Graham on Create an algebraic expression from a word problem, simplify, and evaluate 8 years, 5 months ago

Gave some feedback: Has some problems

Chris Graham commented on Create an algebraic expression from a word problem, simplify, and evaluate 8 years, 5 months ago

Why only one part? There doesn't seem to be any good reason why it shouldn't be in two parts.

£2 for a lollipop?! They are unreasonably expensive sweets. May need a re-think to make this more realistic. You state Jerry eats a lot and I would disagree (based on my own sweet-eating habits), so perhaps these could be packets of sweets?

You have mixed singular "Jerry", and plural "they".

A good addition would be to add a step to (what will be) part a) which asks for an expression for each of the 3 components. This bit should also be above the cost equation in the advice. "we can see that the unsimplified expression..." can't be seen at all, until those steps have been taken.

Lauren Richards on Lowest common multiples 8 years, 5 months ago

Gave some feedback: Needs to be tested

Hannah Aldous on Use the quadratic formula to solve an equation in terms of an unknown variable 8 years, 5 months ago

Gave some feedback: Needs to be tested

Chris Graham on Discrete and continuous data 8 years, 5 months ago

Gave some feedback: Ready to use

Chris Graham commented on Discrete and continuous data 8 years, 5 months ago

Very nice question. I've just made some very minor changes to the advice wording. 

Christian Lawson-Perfect on Finding unknown coefficients of a polynomial, using the remainder theorem 8 years, 5 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Finding unknown coefficients of a polynomial, using the remainder theorem 8 years, 5 months ago

Saved a checkpoint:

Good stuff!

Christian Lawson-Perfect on Estimate the mean and find the modal class for grouped data 8 years, 5 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Estimate the mean and find the modal class for grouped data 8 years, 5 months ago

Saved a checkpoint:

I've changed the wording a bit to make it clearer.

I've changed "stage 1 average" to "stage 1 grade", because it could be confusing.

Lauren Richards commented on Lowest common multiples: train timetable example 8 years, 5 months ago

I have made the changes you suggested and made sure the LCM will not be either of the given numbers. 

Hannah Aldous commented on Calculating Expected Values given a table of probabilities 8 years, 5 months ago

just a few things to comment on

• in the statement equation it says 'expected of times' which doesn't make sense
• maybe you could explain what p(film) is somewhere
• the way you have phrased '120 people buy tickets to see one of...' makes it sound like they all bought the same film ticket
• i think you can omit 'by rolling a 2 or 4' in b i as you say it twice
• in your advice for b ii you could maybe state the frequncy of outcome a bit clearer and after the equation
• maybe in your advice you could adapt it when the fraction can't be simplified to simply say it is in it's simplest form
• in advice for the last part you can omit 'using the experimental data' as you say it twice

Lauren Richards on Lowest common multiples: train timetable example 8 years, 5 months ago

Gave some feedback: Needs to be tested

Stanislav Duris commented on Cumulative percent decrease 8 years, 5 months ago

I have changed the part b) how you suggested so it's more natural. I have also separated part c) into its own question.

Stanislav Duris on Cumulative percent decrease 8 years, 5 months ago

Gave some feedback: Needs to be tested

Hannah Aldous on Calculating Expected Values given a table of probabilities 8 years, 5 months ago

Gave some feedback: Has some problems

Christian Lawson-Perfect on Lowest common multiples: train timetable example 8 years, 5 months ago

Gave some feedback: Has some problems