PR-0552UK Primary Science - Book 2

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The torch experiment Light ~ Activity 4 Objective • investigate the relationship between light and materials Working scientifically • Questioning • Observing • Predicting • Investigating and experimenting • Analysing (sorting and classifying) • Recording and communicating Designing and making • Exploring • Making Background information If light that hits a material travels straight through it then the material is transparent. Objects can be clearly seen through transparent materials. If no light passes through an object then it is opaque and nothing can be seen through the object. If a little light is transmitted through a material and close objects cannot be seen clearly then the object is translucent. Before the lesson Materials needed • Variety of materials with opaque, transparent and translucent qualities (e.g. plastic bottles, cellophane, thin nylon, cotton wool, tracing paper, pencil, scissors, water, frosted glass, thick coloured plastic), strong torches or an OHP, three cardboard boxes. Preparation • Label the three boxes ‘Allows Light to Pass Through – Transparent’, ‘Prevents Light Passing Through – Opaque’ and ’Allows a Little Light to Pass Through – Translucent’. • Divide the class into small groups. Provide a variety of materials for the pupils to test in their groups. The lesson Stimulus • Demonstrate to the pupils what they will be doing in the torch experiment. Shine a torch through each type of material. Introduce the terms ‘transparent’, ‘opaque’ and ‘translucent’. Discuss their meanings. What to do • In groups, test each object or material by holding it in front of the light. Categorise them into groups according to how much light passes through. • Discuss the types of shadows they form. • Revise the terms ‘opaque’, ‘transparent’ and ‘translucent’. Show the pupils the boxes and get each group to place their materials in the correct box. • On the worksheet, pupils use their own words to explain each term and make a list of objects under each of the headings. After the lesson Answers 1. Opaque – doesn’t allow light to pass through. Transparent – allows all light to pass through. Translucent – allows some light to pass through. 2. Teacher check 3. Answers will vary but may include such things as: (a) blinds, clothing, walls, doors (b) windows, glasses, clear plastic, packaging (c) frosted glass, coloured glass Viewing Sample Additional activities • Design and cut out scary shapes from opaque and translucent materials and attach to sticks. Get the pupils to try holding the shape close to a strong light and then further away. What do they notice about the shadow? • Perform puppet plays with the shapes. Display ideas • Display the shapes made in ‘Additional activities’. • Display materials on a table under the headings of ‘opaque’, ‘transparent’ and ‘translucent’. 44 <strong>PR</strong>IMARY SCIENCE ~ Prim-Ed Publishing ~ www.prim-ed.com
Light ~ Activity 4 The torch experiment What do these words mean? (a) opaque (b) transparent (c) translucent List the materials you tested under the correct heading. List some of the uses for materials which are: opaque. Viewing Sample transparent. translucent. www.prim-ed.com ~ <strong>PR</strong>IMARY SCIENCE ~ Prim-Ed Publishing 45
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OUTCOME LINKED PRIMARY Book 2 Mysel
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Teacher information................
Page 5 and 6: Teacher information The pupil pages
Page 7 and 8: Differentiating activities Meeting
Page 9 and 10: Essential science resources Below i
Page 11 and 12: Assessment proforma Name Class Term
Page 13 and 14: Assessment proforma - Designing and
Page 15 and 16: About me We are all different Chang
Page 17 and 18: Myself ~ Activity 1 About me (a) Dr
Page 19 and 20: Myself ~ Activity 2 We are all diff
Page 21 and 22: Myself - Activity 3 Changes As we g
Page 23 and 24: Myself ~ Activity 4 A need or a wan
Page 25 and 26: What are insects? Parts of an insec
Page 27 and 28: Plants and animals ~ Activity 1 Wha
Page 29 and 30: Plants and animals ~ Activity 2 Par
Page 31 and 32: Plants and animals ~ Activity 3 Des
Page 33 and 34: Plants and animals ~ Activity 4 Dra
Page 35 and 36: Plants and animals ~ Activity 5 Obs
Page 37 and 38: Plants and animals ~ Activity 6 Dif
Page 39 and 40: Plants and animals ~ Activity 7 Noc
Page 41 and 42: Plants and animals ~ Activity 8 Foo
Page 43 and 44: Plants and animals ~ Activity 9 Wha
Page 45 and 46: Plants and animals - Activity 10 Li
Page 47 and 48: Plants and animals - Activity 11 Li
Page 49 and 50: Making shadows Measuring shadows Sh
Page 51 and 52: Light ~ Activity 1 Draw a picture t
Page 53 and 54: Light ~ Activity 2 Measuring shadow
Page 55: Light ~ Activity 3 Shadow clock Fol
Page 59 and 60: Light ~ Activity 5 Sun facts Read t
Page 61 and 62: Sound Making sounds banging blowing
Page 63 and 64: Sound ~ Activity 1 Sound Sound Circ
Page 65 and 66: Sound ~ Activity 2 Use different ma
Page 67 and 68: Heat Measuring temperature applianc
Page 69 and 70: Heat ~ Activity 1 Describe how you
Page 71 and 72: Heat ~ Activity 2 Measuring tempera
Page 73 and 74: Magnetic attraction Magnetic proble
Page 75 and 76: Magnetism and electricity ~ Activit
Page 83 and 84: Push or pull? Down the ramp! Float
Page 85 and 86: Forces ~ Activity 1 Push or pull? A
Page 87 and 88: Forces ~ Activity 2 Down the ramp!
Page 89 and 90: Forces - Activity 3 Float or sink?
Page 91 and 92: Materials in the classroom Sorting
Page 93 and 94: Properties and characteristics of m
Page 101 and 102: Changing by heating Maintaining tem
Page 103 and 104: Materials and change ~ Activity 1 C
Page 105 and 106: Materials and change ~ Activity 2 M
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Materials and change ~ Activity 3 M
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Materials and change ~ Activity 4 W
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Natural or built? Minibeast hunt Lo
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Caring for my locality ~ Activity 1
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PR-0552UK Primary Science - Book 2

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