Transition to university

Stanislav Duris commented on Exponential increase 8 years, 5 months ago

This question was originally a part c) in question Exponential increase and decrease.

Elliott Fletcher on Calculating Expected Values given a table of probabilities 8 years, 5 months ago

Gave some feedback: Needs to be tested

Stanislav Duris on Exponential increase 8 years, 5 months ago

Gave some feedback: Needs to be tested

Bradley Bush on Using a speed graph to find distance 8 years, 5 months ago

Gave some feedback: Needs to be tested

Bradley Bush commented on Using a speed graph to find distance 8 years, 5 months ago

Thank you again for the feedback! I've made all the changes you suggested, but I cannot find the "its" or "it's" anywhere in the text so I am hoping that I deleted it when editing the question earlier. 

Stanislav Duris on Square and cube numbers 8 years, 5 months ago

Gave some feedback: Needs to be tested

Chris Graham on Using Laws for Addition and Subtraction of Logarithms 8 years, 5 months ago

Gave some feedback: Has some problems

Chris Graham commented on Using Laws for Addition and Subtraction of Logarithms 8 years, 5 months ago

Part b) asks for the answers as a fraction, but the gaps do not accept fraction input. In addition, the correct answer is displayed as a decimal. Tick the "Allow the student to enter a fraction?" checkbox, which will also reveal an option to display the answer as a fraction.

In the advice, rather than (...), use \left( and \right) for parentheses, which scale to the height of the contents.

The pairs (i),(ii) and (iii),(iv) in part a) don't really ask anything different, but I think that's OK. You could have (iv) result in a fraction, though then you will need to add "Enter your answer as a fraction where appropriate" or similar in the part prompt.

Otherwise this is good.

Stanislav Duris on Find bounds for distance and time spent running, given imprecise measurements 8 years, 5 months ago

Gave some feedback: Needs to be tested

Bradley Bush on Using a speed and acceleration graph 8 years, 5 months ago

Gave some feedback: Needs to be tested

Bradley Bush commented on Using a speed and acceleration graph 8 years, 5 months ago

Thank you for the feedback, I agree on second reading of the question, it isn't the best approach to ask this in this way at this point in the question. I was trying to test that the student can identify rate of change just be reading the equation but I think it is slightly pointless without any calculus now that you point it out. 

I'm just going to remove that part for now and then I'll add developing a question on recogising ate of change to my to do list.

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

Gave some feedback: Needs to be tested

Christian Lawson-Perfect on Using a speed graph to find distance 8 years, 5 months ago

Gave some feedback: Has some problems

Christian Lawson-Perfect on Using a speed graph to find distance 8 years, 5 months ago

Saved a checkpoint:

I've changed all the gaps to number entry parts.

Part d: "Given that the the total distance travelled over the $10$ second period $=$ $126$ metres" is not how I would state the distance travelled. I'd just write "The car travelled $126$ metres over the 10-second period."

I'd want the answer as a decimal, too. Since you're dividing by 10 it's always going to have just 1 decimal place, right?

Yet again, there's an "it's" instead of "its".

Christian Lawson-Perfect on Using a speed and acceleration graph 8 years, 5 months ago

Gave some feedback: Has some problems

Christian Lawson-Perfect on Using a speed and acceleration graph 8 years, 5 months ago

Saved a checkpoint:

What's the idea with part e? Without calculus, how do I answer it? I think the choices and answers are the wrong way round - you have two options for "no acceleration". I think looking at graphs is more appropriate at this level. Either way, it should be a separate question.

Christian Lawson-Perfect on Cumulative percent decrease 8 years, 5 months ago

Gave some feedback: Has some problems

Christian Lawson-Perfect on Cumulative percent decrease 8 years, 5 months ago

Saved a checkpoint:

Numbers in text should be in LaTeX, unless they're counting numbers, e.g. "two things". It's conventional to use words instead of digits when you're talking about a number of things or an ordinal, rather than a measurement. See this page from the BBC's style guide.

I've done some rewording in part a, and removed the statement - it was superfluous.

Part b is very artificial. A more natural question would be "after how many more months will the price fall below £xxx?", where the price is a multiple of £10.

Part c could be a separate question.