Presents step-by-step instructions for eleven investigations of the ways solids can be changed, covering melting, mixing, dissolving, separating, heating and cooling, and irreversible changes.
Presents step-by-step instructions for eleven investigations of the properties of materials, covering such topics as hardness, stretchiness, transparency, and buoyancy.
Presents an introduction to gravity, in simple text with illustrations, providing an explanation of how it works as Zac takes a trip on a space shuttle.
Presents an introduction to the rock cycle, providing information on how molten lava from the earth's core is transformed into a piece of rock in a little boy's hand.