Try "Les vacances - le passe compose", a worksheet about a holiday that helps pupils practise the passe compose and verbs formed with etre, shared by hmgibson. Also try a booklet for GCSE French conversation which has useful revision for oral exams, shared by flora79.
"Survival of the fittest" is a PowerPoint lesson for post-16 biology that looks at the four observations listed by Darwin in his theory of natural selection. It focuses on speciation and can prompt debate among pupils about how new species can be formed.
See the TES science forums for links to a Darwin focus group and information on Hubert Sauper's film Darwin's Nightmare, which offers a useful basis for teaching in biology, economics, politics, RE, PSE and English.