Transition to university

Elliott Fletcher commented on Probability of the union of two non-mutually exclusive events 8 years, 4 months ago

Thanks for the feedback Chris, i have tried to reword the statement, hopefully it is clearer now.

Elliott Fletcher on Probability of the union of two non-mutually exclusive events 8 years, 4 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Calculate the areas of polygons 8 years, 4 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher commented on Calculating Expected Values given a table of probabilities 8 years, 4 months ago

I have inverted the table and moved it into the statement and i have also added an extra part about Genre. 

Elliott Fletcher on Calculating Expected Values given a table of probabilities 8 years, 4 months ago

Gave some feedback: Needs to be tested

Aiden McCall on Transformation - Reflection 8 years, 4 months ago

Gave some feedback: Needs to be tested

Chris Graham on Transformation - Enlargement 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Transformation - Enlargement 8 years, 4 months ago

The diagram with rectangles of the same scale reflected across $y=-x$ are very confusing. To start with, I would avoid having the same, albeit negative, scale. Your question statement says "Describe the transformation of image A to B." From that statement, describing this transformation in terms of enlargement is a strange thing to do (rotation or reflection come to mind).

In the advice, to the naive student, the way that you describe finding the centre of enlargement - drawing lines between corresponding vertices (e.g. top left of A And top left of B) - the lines do not intersect at all.

I guess the point is that it is not clear from your diagram that B has inverted (this is only clear when you reverse engineer it, starting with the first image and applying the scale factor to each vertex). You would need to label the individual vertices on both A and B to make that clear, or just avoid this example altogether.

Chris Graham on Algebra vocabulary 8 years, 4 months ago

Gave some feedback: Ready to use

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

Corrected a couple of typos and have formatted the table so that it is left aligned.

Chris Graham on Transformation - Translation 8 years, 4 months ago

Gave some feedback: Has some problems

Chris Graham commented on Transformation - Translation 8 years, 4 months ago

My translation was $(-8,2)$ but the generic statements don't explicitly tell me that my translation in $x$ is negative. Can you expand with further lines, stating e.g. the translation in x is distance 8 and in the negative direction, so the translation is -8. Or something along those lines. 

Chris Graham commented on Transformation - Reflection 8 years, 4 months ago

Yes, either look at it again in Inkscape, or remove it.

Aiden McCall commented on Transformation - Reflection 8 years, 4 months ago

I have fixed the image it was a typo between a 1 and an l. Though having a look at the question one of the options is broken for the image and it's advice image. In that it will not display the letter B on the image but does show the letter A. 

Not sure how to fix this problem seems to be something to do with Inkscape. Shall I remove this image?

Chris Graham commented on Transformation - Reflection 8 years, 4 months ago

One of the SVGs, graph_reflection_triangle_y-x_9Jed1Ac.svg, does not seem to exist.

Chris Graham on Transformation - Reflection 8 years, 4 months ago

Gave some feedback: Doesn't work

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

Gave some feedback: Ready to use

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

I've made some small changes in the advice. You should use \mathrm{...} where you have words in the equations, such as "Volume". I've also made some further adjustments to the variable ranges.

Looks good.

Aiden McCall on Transformation - Enlargement 8 years, 4 months ago

Gave some feedback: Needs to be tested

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

Thanks for your feedback Chris, i have changed the variables so that each question has quite nice numbers for answers now.