CONTENTS 1
Lesson 1 What Gives Your Skin Its Color? 1
Lesson 2 Food 5
Lesson 3 You Taste by Smelling 10
Lesson 4 Bacteria 14
Lesson 5 The History of Bicycles 19
Lesson 6 Volcanoes 24
Lesson 7 The Great Star-Wheel 30
Lesson 8 The Science Behind Weather Proverbs 35
Lesson 9 Different Ways to Tell Time 40
Lesson 10 Bees Abuzz over RoboBee 45
Lesson 11 Booming Sounds Can Damage Kids'Ears 51
Lesson 12 Animals Make Sense out of Scents 57
Lesson 13 New Devices Track Stolen Cars 62
Lesson 14 Car Runs on Fast-Food Fuel 67
Lesson 15 Smart Glass Changes Color 73
Lesson 16 Function 79
Key to Exercises 86