6Chapter 6: A Journey Through the Solar System
19Chapter 19: The Secrets of Density
7Chapter 7: Making Cloudy Weather
20Chapter 20: The Wonders of the Water Cycle
8Chapter 8: Plant Power!
21Chapter 21: The Power of Simple Machines
9Chapter 9: How Does Sound Travel?
22Chapter 22: Exploring the World of Electricity
10Chapter 10: The Amazing Water Walk
23Chapter 23: The Power of Sound and Vibrations
11Chapter 11: The Bouncing Egg
24Chapter 24: Exploring the Wonders of Light and Shadows
12Chapter 12: The Invisible Ink Mystery
25Chapter 25: The Wonders of Plant Growth
13Chapter 13: The Incredible Balloon Rocket
26THE END
