Material created by students working with the School of Mathematics, Statistics & Physics E-Learning Unit at Newcastle University over the summer of 2017, to support students making the transition from school to university.

## Project activity

#### Christopher Graham on Extract common factors of polynomials 1 month, 3 weeks ago

The pattern match on line 10 of the custom function no longer appears to handle the commutativity of the expression, despite using the doCommute option. E.g. $2*(17x+2)$ is not acccepted, however $(17x+2)*2$ is.

#### Christopher Graham on Extract common factors of polynomials 1 month, 3 weeks ago

Saved a checkpoint:

Checkpointing before looking at the problem with the user defined function mark_factorised which no longer appears to be functioning correctly.

#### Christopher Graham on Extract common factors of polynomials 1 month, 3 weeks ago

Gave some feedback: Has some problems

#### Christopher Graham on Complete the square and find solutions 1 month, 3 weeks ago

Changed gaps to number entry, as they were not being marked correctly as mathematical expressions.

#### Parul Sharma on Complete a frequency table and find the measures of central tendency 3 months ago

Gave some feedback: Ready to use

#### Mohini Chand on Using Laws for Addition and Subtraction of Logarithms 3 months, 3 weeks ago

Gave some feedback: Ready to use

#### Christopher Graham on Find the equation of a line through two points - positive gradient 4 months ago

Fixed bug in correct line plot, caused by reading wrong student answer box (must have had a part added)

#### Christopher boyd on Find the equation of a line through two points - positive gradient 9 months ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect on Find and use the formula for a geometric sequence 11 months, 1 week ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect on Find and use the formula for a geometric sequence 11 months, 1 week ago

Saved a checkpoint:

Looks like there was an off-by-one error.

#### Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 11 months, 1 week ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect on Solving linear simultaneous equations by elimination 11 months, 1 week ago

Saved a checkpoint:

You're right! I've fixed it, and improved the TeX. Worried that I let that slip by!

#### Deirdre Casey on Find and use the formula for a geometric sequence 11 months, 2 weeks ago

In part b does not accept correct answer. Mistake also shown in the solutions.

#### Deirdre Casey on Find and use the formula for a geometric sequence 11 months, 2 weeks ago

Gave some feedback: Has some problems

#### Deirdre Casey on Solving linear simultaneous equations by elimination 11 months, 2 weeks ago

Gave some feedback: Has some problems

#### Deirdre Casey on Solving linear simultaneous equations by elimination 11 months, 2 weeks ago

I think there is a sign error in the second equation in part b.

#### Christian Lawson-Perfect on Substitute values into formulas 1 year ago

Saved a checkpoint:

I've changed the definition of x2 to make sure the sales are always non-negative.

#### Christian Lawson-Perfect on Expand brackets and collect like terms 1 year ago

Saved a checkpoint:

I've fixed part h - I was missing a plus-or-minus in the matching pattern.

#### J. Richard Snape on Substitute values into formulas 1 year ago

Part (b) uses the random variable n={0..4}, but that can give negative sales in a year which doesn't make much sense. I think that the variable definition has been copied over from a different word type question and should actually be allowed to run {2..5}

#### J. Richard Snape on Expand brackets and collect like terms 1 year ago

Thanks for this fantastic question set in "Transition to University". I'm trialling using them in my teaching this year. I have a tiny problem with part h in this question - for some reason when I use it when a student enters a correct answer it marks it wrong, giving feedback that it can be further simplified. I attach a screenshot - not sure what rule is triggering this as even the 419 constant is prime, so I can't see any further gathering of terms possible. I'll try to debug myself, but any help would be appreciated :) It seems to be using "all" for simplification in the marking, but so are other parts in this question that work fine.