<p>Worksheet to practice mole calculations on reacting masses and empirical formulae suitable for GCSE Chemistry students.</p>

<p>Worksheet for middle to higher ability GCSE pupils to explain collision theory using a series of diagrams. Includes temperature, concentration, gas pressure, surface area and catalysts</p>

<p>Powerpoint looking at continuous and discontimuous variation in a species and selective breeding. Information and pupil tasks for KS3 Biology. </p>

<p>Worksheet showing how genetic mutation can lead to antibiotic resistance.</p>

<p>A Powerpoint presentation on how human poulation growth has risen dramatically and the effects it can have on other species. includes hyperlink to a population counter, (which you may wish to change if you have objections to adverts) a graph activity and a couple of open ended discussion tasks. Suitable especially for KS4 AQA B1b 8.1</p>

<p>Two powerpoint Shows to help go through HSW definitions in simplified pupil language. Show 1 has 7 slides where pupils have to match up definitions. I would probably only use one slide per lesson- maybe as a starter or possibly a paper version of the whole thing for homework and then go throughthe answers. Slide show 2 is the same thing but without the lines for indicating the answes- useful if you want a paper version for the pupils to fill in with their own lines.</p>