Transition to university

Elliott Fletcher on Calculating expected values using theoretical probability and experimental probability 8 years, 4 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Use formulae for the area and volume of geometric shapes 8 years, 4 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Algebra vocabulary 8 years, 4 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher commented on Identify independent events 8 years, 4 months ago

Thanks for the feedback Chris, i have tried a new way of formatting the advice for part b), so hopefully it looks better now. Also i have tried to draw my conclusions earlier in b) as well, i just left it as it was for the die one as i thought there wasn't much more i could do for that one.

Elliott Fletcher on Identify independent events 8 years, 4 months ago

Gave some feedback: Needs to be tested

Chris Graham on Algebra vocabulary 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Algebra vocabulary 8 years, 4 months ago

This is looking good now. I would like to see the advice tabulated with columns for the word, definition and relevant example.

Christian's comment below, "I don't like how the choices are in a different order for each part", is still relevant for a couple of the gaps, which have common choices.

Chris Graham on Use formulae for the area and volume of geometric shapes 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Use formulae for the area and volume of geometric shapes 8 years, 4 months ago

You need to think about the scale of your objects here. If you've gone to the effort of including a tennis ball then it would be a good idea not to give it a 30cm radius (unless it's one of those huge beach ones!). Same for the ice cream cone. 

Elliott Fletcher on Calculate density given mass and volume 8 years, 4 months ago

Gave some feedback: Needs to be tested

Chris Graham on Calculate the areas of polygons 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Calculate the areas of polygons 8 years, 4 months ago

Nice question. However, "a trapezium can be interpreted as half of a parallelogram, this is shown below", isn't really shown below. Since you have included the graphic of the parallelogram, I think that you need to be consistent, and include something along the lines of this: http://www.mathguide.com/lessons/pic-demotrapezoid.gif

Chris Graham on Calculating a simple rate of pay 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Calculating a simple rate of pay 8 years, 4 months ago

Since it's a straightforward question, it might be a nice one to incorporate Christian's random person extension: see https://numbas.mathcentre.ac.uk/question/23094/the-random-person-extension/ 

Chris Graham on Creating Frequency Tables 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Creating Frequency Tables 8 years, 4 months ago

I would suggest moving the current statement to the top of the advice and then move everything before "Complete the frequency table" into the statement. Perhaps the scores could go into a table. 

Chris Graham on Which coin is more likely to be biased? 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Which coin is more likely to be biased? 8 years, 4 months ago

I do like this question, however as it stands the marking is unsatisfactory. If there are no marks for b) then it is very hard to justify the mark for c), since it depends directly on the student's interpretation. I would prefer Christian's suggestion below of careful wording and keep the mark in part b). You need the same careful wording in c) too. 

Chris Graham on Theoretical Probability vs Experimental Probability 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Theoretical Probability vs Experimental Probability 8 years, 4 months ago

I'm not keen on d). It depends on your definition of getting closer - it is staying at the same value whilst the experimental is moving towards it. That's closer in my book. I think I would lose this part altogether, as I'm not sure it adds any value.

In b), I don't think that you need the bullet points under "In this case you have..." if you are later summarising the outcomes in table 2.

You advice in c) ends up being very confusing. The distribution of outcomes in the table are way off the expected, given the probabilities in table 3. I was told that the experimental probability of rolling a 3 is 0.09 and is very close to the theoretical, but it is not, it's way off.

RE your question below, yes, displaying the simplified fraction would be better.