PR-0552UK Primary Science - Book 2

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Choosing materials Properties and characteristics of materials ~ Activity 3 Objective • identify and investigate materials that absorb water and those that are waterproof Working scientifically • Questioning • Observing • Predicting • Investigating and experimenting • Analysing (interpreting) • Recording and communicating Designing and making • Exploring Background information Properties of materials are those characteristics of materials that determine their suitability for specific applications. Through this unit, pupils should extend their knowledge of the range of materials we use and of the properties that characterise them. This knowledge should help them recognise what needs to be considered when a material is chosen for a particular use. Before the lesson Materials needed • Each group: about four each of 10-cm squares of paper towel, tissue, writing paper, magazine paper, newspaper, aluminium foil; a jar of water, teaspoon, soft drink bottle. Preparation • Cut out 10-cm squares of the paper towel for the absorbency test. • Prepare a wet area for the test. The lesson Stimulus • Discuss what may happen if pencils were made of glass, chairs of concrete, pillows of steel etc. • Spill some water and try to mop it up with steel wool or something inappropriate. What to do • Discuss why specific materials have been chosen to make certain objects. For example, a bath toy is often made of plastic so it will float and does not absorb water. • In groups, pupils complete Question 1 on the worksheet. • As a class, discuss the reasons given in the last column. Note: This could be one lesson finished. • Demonstrate the testing procedure to the class; i.e. one teaspoon of water to be absorbed. • Pupils complete their testing. (Each group has about four pieces of each material to test, so they can do a test run first before recording.) • Pupils complete the questions about the test. After the lesson Answers 1. Possible answers • Soft drink bottle – plastic – transparent to see drink, flexible and will not break if dropped. • Window – glass and wood, nails, plastic – transparent, the light comes in, we can see in and out, hard. • Shirt – cloth and plastic buttons – light, flexible, dries quickly when washed, soft to touch (feels nice). 2.– 4. Teacher check. (Pupils should come to the conclusion that good absorbent paper has open weave material and is light and dry. Viewing Sample Additional activities • Continue the activity in Question 1 with different objects. Display ideas • Set up a display of the materials and a selection of the worksheets. 84 <strong>PR</strong>IMARY SCIENCE ~ Prim-Ed Publishing ~ www.prim-ed.com
Properties and characteristics of materials ~ Activity 3 Choosing materials Materials are chosen to make something because they have properties which suit what that object is used for. Study these objects and say why they have been made out of the materials used. The first one has been done for you. Add one of your own. How well did each material soak up water? Test each to find out. Viewing Sample (a) What material(s) rated best? (b) Why? (a) Which material was worst? (b) Why? www.prim-ed.com ~ <strong>PR</strong>IMARY SCIENCE ~ Prim-Ed Publishing 85
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OUTCOME LINKED PRIMARY Book 2 Mysel
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Teacher information................
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Teacher information The pupil pages
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Differentiating activities Meeting
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Essential science resources Below i
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Assessment proforma Name Class Term
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Assessment proforma - Designing and
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About me We are all different Chang
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Myself ~ Activity 1 About me (a) Dr
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Myself ~ Activity 2 We are all diff
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Myself - Activity 3 Changes As we g
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Myself ~ Activity 4 A need or a wan
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What are insects? Parts of an insec
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Plants and animals ~ Activity 1 Wha
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Plants and animals ~ Activity 2 Par
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Plants and animals ~ Activity 3 Des
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Plants and animals ~ Activity 4 Dra
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Plants and animals ~ Activity 5 Obs
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Plants and animals ~ Activity 6 Dif
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Plants and animals ~ Activity 7 Noc
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Plants and animals ~ Activity 8 Foo
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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 and 56: Light ~ Activity 3 Shadow clock Fol
Page 57 and 58: Light ~ Activity 4 The torch experi
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 95: Properties and characteristics of m
Page 99 and 100: 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
Page 107 and 108: Materials and change ~ Activity 3 M
Page 109 and 110: Materials and change ~ Activity 4 W
Page 111 and 112: Natural or built? Minibeast hunt Lo
Page 113 and 114: Caring for my locality ~ Activity 1
Page 129: Caring for my locality ~ Activity 9
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PR-0552UK Primary Science - Book 2

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