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Contents 4
1 Crush with air 7
2 Seal with air 7
3 Weigh some air 8
4 Discover the gases in the air 9
5 Form a gas 10
6 Make a volcano erupt 11
7 Make a wing fly 12
8 Detect moisture in the air 13
9 Measure the wind 14
10 Measure the rain 17
11 Rain-test materials 18
12 Have fun with water pressure 19
13 Remove a lime’s life jacket 19
14 Make things sink, then float! 20
15 Find out about floating 21
16 Command a deep-sea diver 22
17 Make an underwater volcano 23
18 See how liquids float and sink 24
19 Find out if liquids mix 25
20 Test the flow of liquids 25
21 Grow a stalactite 26
22 Is water hard? 27
23 Race a speedboat 28
24 See plants drinking 29
25 Build a simple thermometer 31
26 Race some beads 32
27 Circulate some heat 32
28 Keep a drink cool 33
29 Store some heat 34
30 Fight a fire 35
31 Slice some ice 36
32 Make your own ice cream 37
33 Play with shadows 39
34 Look around corners 40
35 Build a kaleidoscope 42
36 See double 43
37 Make your own flashlight 44
38 Bend a beam of light 46
39 Construct a camera 47
40 Make a rainbow 49
41 See a sunset 50
42 Discover hidden colors 51
43 Mix colors together 52
44 Spin some colors 53
45 Change color 53
46 Test with color 54
47 See colors in bubbles 55
48 Print pretty patterns 56
49 Discover the needs of seeds 59
50 See how a plant grows 60
51 Make a plant maze 61
52 Grow a piece of plant 62
53 See a plant bubble 62
54 Test a plant for food 63
55 Grow your own mold 64
56 See how your ears work 67
57 Find out how your eyes work 68
58 See two pictures as one 69
59 Build a wobble detector 70
60 Change your ears around 71
61 Take a taste test 71
62 Test your sense of touch 72
63 Check your reaction time 73
64 See some sound 75
65 Make a sound gun 76
66 Make a coat-hanger clanger 77
67 Bounce a sound 78
68 Make a paper banger 79
69 Beat some drums 80
70 Strike up a tune 82
71 Play a pipe 82
72 Blow a horn 83
73 Build a banjo 84
74 Charm a snake, fly a kite 87
75 Compare the strength of magnets 88
76 Build a magnetic car 89
77 Detect a magnet’s field 90
78 Separate a mixture 91
79 Construct a compass 92
80 Make an electromagnet 93
81 Build a buzzer 94
82 Bend some water 97
83 Make a propeller 97
84 Jump with electricity 98
85 Wave a magic wand 99
86 Build a charge detector 100
87 Construct a circuit 102
88 Probe for electricity 104
89 Build a battery 105
90 Make a merry-go-round 106
91 Build a wheelbarrow 109
92 Get a jet going 110
93 Build a turbine 111
94 Test for friction 111
95 Move in a circle 112
96 Engage a gear 112
97 Make an automatic machine 113
98 Construct a fan 114
99 Build a water wheel 116
100 Lift a load with water 118
101 Build a crane 119
INDEX 120
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