Chemistry - Bad reaction to PPAs

7th January 2011 at 00:00

Higher chemistry candidates' responses to practical test questions (or PPAs) were "very poorly done" last year, suggesting some of them had "no experience" of various experiments.

The assessors commented: "In some centres, the benefits of effective teaching and learning with respect to PPAs were clearly evident, with large numbers of candidates producing very sharply focused answers; in other centres, however, many answers still suggest that the candidates have absolutely no experience of the PPA."

Schools were also advised to do more to prepare Higher pupils for problem- solving questions and those which required more detailed explanations. Candidates could also improve their grade through "more attention to the rote-learning of the chemical knowledge on the course".

Intermediate 2 candidates also lost marks when tackling PPA questions by failing to provide sufficient detail: for example, in Question 5 (a) they should have answered that the catalyst was heated first, followed by the mineral wool.

Pupils were also reminded of the need to use their calculators correctly, especially if brackets were involved.

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number

Comments

The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now