Transition to university

Christian Lawson-Perfect commented on Percentages and ratios - box of chocolates 8 years, 6 months ago

When ratio_dark is 1, the advice says "there are 1 dark chocolates". You could either write two versions for the singular and plural cases, or make sure ratio_dark is always greater than 1.

Christian Lawson-Perfect on Finding the missing value of a constant in a polynomial, using the Factor Theorem 8 years, 6 months ago

Gave some feedback: Ready to use

Christian Lawson-Perfect on Finding the missing value of a constant in a polynomial, using the Factor Theorem 8 years, 6 months ago

Saved a checkpoint:

Looks good!

Elliott Fletcher on Converting between Mixed Numbers and Improper Fractions 8 years, 6 months ago

Gave some feedback: Has some problems

Hannah Aldous on Completing the square 8 years, 6 months ago

Gave some feedback: Needs to be tested

Lauren Richards on Rationalising the denominator - surds 8 years, 6 months ago

Gave some feedback: Needs to be tested

Vicky Hall commented on Rationalising the denominator - surds 8 years, 6 months ago

I've fixed the variables so that part e) will simplify if it needs to in the advice. I also changed the variables slightly in part b) to avoid ever having square numbers under the roots. 

Lauren Richards commented on Rationalising the denominator - surds 8 years, 6 months ago

I've randomised parts e) and f) now too but having problems with getting e) to finally simplify. Vicky would you mind having a look at this please? I've written THIS NEEDS TO SIMPLIFY next to the issue!

As a result of not getting it simplified, I haven't set the correct answers yet. 

Stanislav Duris on Find bounds for distance and time spent running, given imprecise measurements 8 years, 6 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher commented on Dividing a polynomial with remainders, using the remainder theorem 8 years, 6 months ago

Thanks Stanislav, the code was really helpful :)

Elliott Fletcher on Dividing a polynomial with remainders, using the remainder theorem 8 years, 6 months ago

Gave some feedback: Needs to be tested

Stanislav Duris on Simple interest 8 years, 6 months ago

Gave some feedback: Needs to be tested

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

Yeah, i completely agree with the title that you suggested Hannah, it sounds much better.

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

Gave some feedback: Needs to be tested

Elliott Fletcher on Laws of Indices 8 years, 6 months ago

Gave some feedback: Needs to be tested

Elliott Fletcher on Completing the square 8 years, 6 months ago

Gave some feedback: Has some problems

Elliott Fletcher commented on Completing the square 8 years, 6 months ago

Main Parts

a) good

b) i) and ii) good

b) iii) I think there is an error here, i got $\simplify{x^2+29x-7}$, so i calculated the correct answer as (x+29/2)^2-869/4, however the displayed correct answer is (x+29/2)^2-71.

c) i) I think there is an error here, i got $\simplify{6x^2+36x+13}$, so i got the answer as 6(x+3)^2-41. The advice section also shows this answer, but the displayed answer 6(x+3)^2-51.

c) ii) There is an error here too, i got $\simplify{3x^2+60x-10}$, so i think the answer should be 3(x+10)^2-310, but the displayed answer is 3(x+10)^2-59.

d) good, but i would relabel the two possible answers here, as you have in the advice section as x1 and x2 (x1 being the smaller one).

Advice

I think it's fine if you don't show the working out for every question (because i know how long that would take), but i think you should say at the beginning of the advice for each part something like "We will just do one question from each part, as the other questions follow the same pattern" or "This can be similarly done for ii) and iii)".

d) I would write the numbers as fractions instead of decimals, so it's easier for the students to follow. Also, you say in the question to give the smallest answer first, so i think x1 should be the smaller number instead of x2.

Elliott Fletcher on Using Surds, Rationalising the Denominator 8 years, 6 months ago

Gave some feedback: Needs to be tested