1	Discuss examples of water evaporation and produce a table of examples. e.g. puddles drying out after it stops raining. e.g. clothes drying on a line. Investigate : What conditions cause water to evaporate the quickest?
2	Given a salt and sand mixture, find a way of getting pure salt and provide explanations based on upon scientific knowledge.
3	Using a variety of clear liquids, tap water, salt water, coloured ink, distilled water, predict whether each liquid is pure or whether it has dissolved material in it and devise a test to find out.