SciencePlanning5c - Science Planning Unit 5C Gases Around...

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Science Planning Unit 5C – Gases Around Us Week/ Dat e Learning Objective Input Main Activity Plenary Resources Week One 09/01/06 To know the characteristic features of the solid and liquid states of matter. To sort materials as solids and liquids To describe the processes of melting and dissolving Show children the brick, candle, sugar lumps and water. Use items to review children’s knowledge. Demonstrate melting by lighting candle and observing the wax. Demonstrate dissolving by stirring a sugar lump into water, in their groups, give the children the cards to sort into solids and liquids. Ask children to think of ways that they can tell they are surrounded by air. (sensation of moving through the air on a bicycle, kite flying, windmills etc.) Build on children’s ideas to explain that air ‘nothing’, but a special kind of material called a ‘gas’. Inflate the beach ball. Demonstrate how it becomes firmer and more ‘bouncy’ as you squeeze more air inside it. Discuss the use of a bicycle pump, and effect of getting a puncture. Drop a marble, then drop a feather. Q Why does the feather fall more slowly? If they think it is just because of a weight difference, drop a pin to show that a light object can fall just as fast as a heavier one. Develop the idea that the large feather has to push more aside than the marble or pin, and so experiences more ‘air resistance’. Discuss use of air resistance in slowing down the fall of a parachutist. Q Does air have mass (and thus weight)? (Gases are much lighter than solids and liquids, but are not completely weightless. If air had no mass, it would drift off into space. Show balloon balance and ask children to predict what will happen if you let air out of one of the balloons. Let air slowly out of one balloon. Was prediction correct? Show list of objects involving air. Ash chn to think about these and discuss in grps how air make each thing work. Each child select an item and write a paragraph explaining how air makes them work. Ask
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SciencePlanning5c - Science Planning Unit 5C Gases Around...

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