
Archives
 December 2019
 July 2018
 October 2017
 August 2017
 July 2017
 November 2016
 September 2016
 May 2016
 February 2016
 January 2016
 November 2015
 October 2015
 July 2015
 June 2015
 March 2015
 January 2015
 December 2014
 November 2014
 October 2014
 September 2014
 August 2014
 May 2014
 March 2014
 February 2014
 January 2014
 December 2013
 November 2013
 October 2013
 August 2013
 July 2013
 June 2013
 May 2013
 April 2013
 March 2013
 February 2013
 January 2013
 December 2012
 November 2012
 October 2012
 September 2012
 August 2012
 July 2012
 May 2012
 April 2012
 March 2012
 February 2012
 January 2012
 December 2011
 November 2011
 October 2011
 September 2011
 August 2011
 July 2011
 June 2011
 May 2011
 April 2011
 March 2011
 February 2011
 January 2011
 December 2010
 November 2010
 October 2010
 September 2010
 August 2010
 July 2010

Meta
Category Archives: gradient
Estimating the gradient of curves – variants behaving differently
The screenshots below show two variants of the same question. I should start by emphasising that the question is only used formatively – it’s on the Maths for Science Practice Assignment. The two variants behave very differently and the reason … Continue reading
Function or derivative?
The common student error in the question below is somewhat predictable – but I’m not sure why the students make the error that they do. Whilst 60.4% of responses are entirely correct, 21.7% select the three options that are actually the places where … Continue reading
Posted in derivative, gradient, mathematical misunderstandings
Tagged derivative, gradient, mathematical misunderstandings
1 Comment
More errors in finding the gradient of a graph
Working yesterday on the chapter on Graphs and Gradient for the new edition of Maths for Science, I remembered the other student error that I have seen in iCMA questions. When asked to find the gradient of a graph like … Continue reading
Errors in finding the gradient of a graph
Consider the simple question shown below: This question is generally well answered, but when students make a mistake, what do they do wrong?