Each set contains three complete science kits (3 manuals/3 supply bags).
Complete the sets in order to experience the ultimate in science adventure. Sets can also be done individually. Recommended starting sets:

Ages 5-8: Start with Set 1, 2, or 3
Ages 9-12: Start with Set 4

Set 2 - BECOME A METEOROLOGIST, CHEMIST, AND VOLCANOLOGIST ALL IN ONE SET! Mix solids and liquids to create gas, a bouncy ball, and goop. Make a weather station with a barometer, wind vane, rain gauge, and thermometer. Watch raisins dance. Feel real pumice. Build a volcano and finish this set with an eruption that Young Scientists will want to repeat over and over again! Contains: Weather (Kit 4); Solids, Liquids, and Gases (Kit 5); and Volcanoes (Kit 6).

Other kits include:
Set 1:
(Kit 1)Recycling
(Kit 2)Scientific Measurements
(Kit 3)Magnets
Set 2:
(Kit 4)Weather Station
(Kit5)Solids, Liquids and Gases
(Kit 6)Volcanoes
Set 3:
(Kit 7)Minerals
(Kit 8)Crystals
(Kit 9)Fossils
Set 4:
(Kit 10)Bacteria and Fungi
(Kit 11)Weight and Volume
(Kit 12)Acids and Bases
Set 5:
(Kit 13)Water
(Kit 14)Capillary Action
(Kit 15)Air
Set 6:
(Kit 16)Flight
(Kit 17)Heart and Lungs
(Kit 18)Digestive System
Set 7:
(Kit 19)Bones and Muscles
(Kit 20)The Senses
(Kit 21)Light
Set 8:
(Kit 22)Mirrors
(Kit 23)Electricity
(Kit 24)Circuits and Electromagnets
Set 9:
(Kit 25)Magnetism
(Kit 26)Static Electricity
(Kit 27)Tornadoes, Clouds, and Water Cycle
Set 10:
(Kit 28)Seeds, Fruits, and other Plant Parts
(Kit 29)Eggs
(Kit 30)Owls
Set 11:
(Kit 31)Stars
(Kit 32)Planets
(Kit 33)Forces
Set 12:
(Kit 34)Surface Tension
(Kit 35)Polymers
(Kit 36)Famous Scientists and Their Experiments