Transition to university

Elliott Fletcher commented on Combining Logarithm Rules to Solve Equations 8 years, 5 months ago

This is a really good question, i just have a couple of comments

Main Parts

a) and b) i would use a \displaystyle before the fractions in the questions to make the fractions look bigger.

Advice

a) in the very last calculation when you are factorising the quadratic, you write the constant term as a power of a different number like 4^3, i would just leave this as it's simplified number, e.g

x^2-30x-4^3 = 0 could be x^2-30x-64 = 0

b) There is a random ' after the ln on the first line here

I think you are just missing a few full stops after some equations. Specifically, the one before "We then just need to rearrange our equation" and the very last line where you give the final value of x.

Elliott Fletcher on Combining Logarithm Rules to Solve Equations 8 years, 5 months ago

Gave some feedback: Has some problems

Hannah Aldous on Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ 8 years, 5 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher on Basic Probability Questions 8 years, 5 months ago

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Hannah Aldous on Arithmetic sequences in an ice cream shop 8 years, 5 months ago

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Vicky Hall on Use formulae for the area and volume of geometric shapes 8 years, 6 months ago

Gave some feedback: Has some problems

Vicky Hall commented on Use formulae for the area and volume of geometric shapes 8 years, 6 months ago

The answer to part a) in the advice is wrong. There's also an issue with the answer to part b). You give all lengths and the angle to the student to two decimal places but then you calculate the answer using more decimal places, which makes your answer slightly more accurate than theirs can ever be. In the example I just did, it still rounds the same to two decimal places in the end (although it might not always) but it wasn't the same to five decimal places, which you give on the line above. This may seem like a small thing but it will confuse the student as no matter how many times they retype it they will not get the same answer as Numbas. You could fix this by rounding your numbers to two decimal places in the variables section.

The advice here is far too wordy. Try it shorten it to get straight to the point. In part a), for example, it would sound better to say:

'We can see from the diagram that the radius of the frisbee is $22\mathrm{cm}$. Replacing the letter $r$ in the formula for the area of a circle with $22$ gives....' etc.

Try to do this with all of the sections.

I have also put all occurences of $\mathrm{volume}$ and $\mathrm{area}$ into \mathrm and changed your American spelling of 'centimetres'.

Vicky Hall commented on Calculate the areas of polygons 8 years, 6 months ago

In parts a) and b), sometimes the answer is already an integer and doesn't need to be rounded so you end up with two identical lines in the advice. (Also, part a) doesn't round at all even when it should do so that needs to be fixed.) You can code your advice section so that certain lines only show if the solution does need to be rounded (I would speak to Lauren about it if you're not sure how as she has an example of this in one of her questions).

I have reworded part a) slightly to make it more succinct and I have also put the unit $\mathrm{m}$ into \mathrm. Have a look through the other parts and try to reword a bit more clearly. I agree with Hannah's advice:

\[\text{I think you need to start the advice for each part with 'The area of a parallelogram is calculated using the formula...'}\].

Aiden McCall on Use formulae for the area and volume of geometric shapes 8 years, 6 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Use formulae for the area and volume of geometric shapes 8 years, 6 months ago

Gave some feedback: Has some problems

Lauren Richards commented on Solving linear simultaneous equations by elimination 8 years, 6 months ago

It won't let me put visibility conditions on it. :(

Stanislav Duris on Simple interest 8 years, 6 months ago

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Chris Graham commented on Basic Probability Questions 8 years, 6 months ago

As discussed, it would be nice to have an example in the statement.

Stanislav Duris commented on Use formulae for the area and volume of geometric shapes 8 years, 6 months ago

This question is very nice, I like how there is some context in every part. The images are great and it's clear what the question asks people to do. Good job with geogebra and all those variables. I've noticed some tiny problems.

• You use "Area =" or "Volume =" a lot in the question and sometimes this is displayed in Latex and sometimes it's not. For example, in parts a)c)d)e), before the gap, it is displayed as normal text. In part b), the font is different and much nicer. Do you want to fix this so it is consistent?
• In part c), "Calculate the volume of a cone given the formula for the area of a cone is" should be "Calculate the volume of a cone given the formula for the volume of a cone is".
• In part d), there is a sentence saying "Using the diagram and applying the volume of a sphere to the tennis ball." which is a bit out of place. Do you want to remove it or maybe adjust it so it makes more sense?
• Is it possible to align geogebra applets to the centre? If not, don't worry.

Advice

• In part a), "(the perimeter of the circle) of the circle." does not read well, I think you should just keep (the perimeter) in brackets. I feel like the sentence starting with "Identifying from the diagram that the radius.." is unfinished but maybe that's just me. Maybe replacing "that" with a comma would fix this. Similar problem in part c).
• In part b), the first line of the equation should look like the formula you gave them in the question, with sin as a function rather than just letters s,i,n.
• I think your a)b)c)d)e) headings shouldn't be bold as well, because now they seem way too big in the advice.

Stanislav Duris on Rounding and estimating calculations 8 years, 6 months ago

Gave some feedback: Has some problems

Bradley Bush on Solving linear inequalities 8 years, 6 months ago

Gave some feedback: Needs to be tested

Bradley Bush commented on Solving linear inequalities 8 years, 6 months ago

Thank you for the feedback. I have simplified the answers and added a drop down for the inequality signs (great idea by the way). I've also fixed the advice error.

Stanislav Duris on Basic arithmetic operations: addition and subtraction 8 years, 6 months ago

Gave some feedback: Needs to be tested