Transition to university

Aiden McCall on Substitute values into formulas 8 years, 6 months ago

Gave some feedback: Has some problems

Hannah Aldous commented on Calculate the areas of polygons 8 years, 6 months ago

part a says round to 1 dp but only marked correct 2 dps
not sure how easy this is to do but on the trapezium diagram could you line up your values for the number on top and bottom
in part d, a + b needs to be in LaTeX
in your advice you've put m for metres in LaTeX for several of the answers but not all
I think you need to start the advice for each part with 'The area of a parallelogram is calculated using the formula...' instead of 'Paralellogram:'
you've put the word height in LaTeX in part c
in part d I would write 'half of a' instead of 'half a' 
typo 'interpretted'
you have a space before a comma in part d
you've written 'this is shown below' but haven't shown below.

Bradley Bush on Equations of straight lines MCQ 8 years, 6 months ago

Gave some feedback: Needs to be tested

Hannah Aldous on Calculate the areas of polygons 8 years, 6 months ago

Gave some feedback: Has some problems

Elliott Fletcher commented on Expansion of brackets 8 years, 6 months ago

Main Parts

parts a) and b)

Typing in the correct answer works fine, but it also displays the red exclamation mark warning saying "Your answer was interpreted to use the unexpected variable name x". This doesn't appear for any of the other parts, so i would maybe take it out.

For all parts, i would put the answer box on the same line as the question, for example

8x(-3x-3x^2+2) = -24x^2-24x^3+16x.

I think it just looks a bit neater.

Parts i) and j)

I would give a hint for students to use the * when writing a product of two different terms like xy in the answer box, in case some students write this and can't understand why their answer is wrong. I think this can be done in the string restrictions section.

I'm not sure how important this is, but maybe put a full stop at the end of each question (after the answer box), also in the advice section.

Advice

I think there should be brackets around the terms that you are multiplying together (even though i know the point of this question is to expand brackets), for example for part a)

\[
\begin{align}
10(-4x-9) &= (10 \times -4x)+(-9 \times 10),\\
&= -90-40*x.
\end{align}
\]

Lauren Richards commented on Using the Quadratic Formula to Solve Equations of the Form $ax^2 +bx+c=0$ 8 years, 6 months ago

• Your i) and ii) need to be not bold and in italics in the parts. 
• The quadratic formula equation in the start of the advice is slightly incorrect - it should be 2a on the denominator, not 2. 
• Something is not quite right for a)ii) in the advice as it is written as it would be when writing it and also midway through the advice for part b). 

Lauren Richards on Using the Quadratic Formula to Solve Equations of the Form $ax^2 +bx+c=0$ 8 years, 6 months ago

Gave some feedback: Has some problems

Hannah Aldous commented on Percentages and ratios - box of chocolates 8 years, 6 months ago

part a you are missing a full stop after box
when I did the question part b calculated there were 14 of every kind then part d said there was 15 coconut, not that important it just didn't flow between questions
in the advice, part b I think it would look better if you aligned method 1 and method 2?
part c I don't think the first few lines of working are useful as they don't contribute to the answer and I don't kniw whether the just add confusion
part d in the question only accepts simplified answer but you haven't explained or stated in the advice what the simplified version is or how to get to it.

other than that great question!

Elliott Fletcher on Expansion of brackets 8 years, 6 months ago

Gave some feedback: Has some problems

Hannah Aldous on Percentages and ratios - box of chocolates 8 years, 6 months ago

Gave some feedback: Has some problems

Hannah Aldous commented on Finding the missing value of a constant in a polynomial, using the Factor Theorem 8 years, 6 months ago

just a few pedantic things I picked up on,
feel like the title should maybe be 'finding the missing value of a constant in a polynomial using the factor theorem'?
in your advice you start with again, but I don't think this is necessary, but it's up to you.
not sure you need commas in between your lines of working, after m or 0.
not sure 'But g(2)=0' should be a sentence independently maybe join it to the sentence before with a comma.

Elliott Fletcher on Finding unknown coefficients of a polynomial, using the remainder theorem 8 years, 6 months ago

Gave some feedback: Needs to be tested

Hannah Aldous on Finding the missing value of a constant in a polynomial, using the Factor Theorem 8 years, 6 months ago

Gave some feedback: Has some problems

Aiden McCall commented on Calculate the areas of polygons 8 years, 6 months ago

Where it says shown below. I am hoping to insert GIFs of the explanation above. I am going to do this over the weekend; if it works i'll insert it if not I will omit the line and gap.

Aiden McCall on Calculate the areas of polygons 8 years, 6 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Mathematical formulae - Volume 8 years, 6 months ago

Gave some feedback: Needs to be tested

Stanislav Duris commented on Addition and subtraction of fractions 8 years, 6 months ago

I haven't noticed any major problems with this question, but I thought about a couple of ideas for slight adjustments.

- If you want the student to do this question without a calculator, don't you want to perhaps tell them not to use it in the question statement? You mention not using a calculator in advice but not in the question itself. Also, you tell them to simplify their answer twice in the question statement. I don't know if you've done this on purpose so they are more likely to notice it, or if this was a mistake.

- Maybe you can slightly adjust a name of this question since there is some multiplication in part c). But it does mainly focus on addition/subtraction so if it stays like it is it should be fine.

- It's a good idea to include the original question at the start of each part in the advice, but maybe it would be even nicer to use the \[ \] format to display it? And maybe also all lines in advice consisting entirely out of equations could be changed into that format. This would make it look a bit neater, since this topic requires a lot of steps and it may be easy to get lost in.

- Although this isn't the question with a main focus on GCD and LCM and I am not sure how you would write this in advice, I still think more advice (maybe just 1 or 2 general sentences with an example different from a question that wouldn't be with variables) on how to find these would help students with simplifying fractions since I think that is the big part of the question. However, if you have included this in some of your other questions about fractions, this isn't essential.

- Also, in Advice at the end of each part you wrote "Using this value to simplify, the final answer is ...", maybe specifying you're dividing both numerator and denominator with this value would help someone struggling with simplification and can't see how it works clearly.

- You keep using the plural form of denominator when saying "keeping the denominators the same" - I don't know if this is better than just using a singular as this is when the two denominators merge into one.

- In the numerator part, the third line consists of just a fullstop from the previous line. I know this will probably differ depending on the device the student is using, but if this is the standard layout it would be great if you could try to fix this somehow. It's a silly thing but it may be distracting. If it's displayed differently on each computer, I'm sorry and I'll shut up.

- When the greatest common divisor is 1 and there is no simplification needed, the last line "Simplifying using...." doesn't really make sense, so it could be changed to be conditionally visible only if gcd ≠ 1, if you're not sure how to do that I can help. However, it can often be very laggy to work with this and Numbas sometimes crashes when you do this, so it's up to you.

Ultimately I think this question does the job well. Good job designing/defining all the variables cause it looks tricky.

Lauren Richards on Mathematical formulae - Volume 8 years, 6 months ago

Gave some feedback: Has some problems

Lauren Richards commented on Mathematical formulae - Volume 8 years, 6 months ago

• You could put the equations for calculating volume for the individual shapes in the actual question or at the start of the advice or as a (show steps) stage.
• You could state what each shape is, or have an introductory statement for each part instead of the overall question statement that generalises all the shapes like "Calculate the volume of the following rectangular-based pyramid.". 
• The little shapes next to Area are awesome. The colourful diagrams are also mint. 
• Make sure you have a full stop after all the final answers in the advice section and you're missing one at the end of the second bit of text in part b) (advice) after depth = []m. This is also true for the second text part of part c) and d). 
• The answer in the advice for part d) is not the same as the expected answer in the question. The advice is the one that is incorrect. You have used h instead of 1/3(h) in the second part. 
• Great question! :)