Do it yourself

Explains the different states of matter and how a substance changes from one to another; and includes experiments and activities.

Experiments and activities introduce students to the different stages of a plant's life, describing how they grow.

Describes simple machines such as an inclined plane, wedge, screw, lever, pulley, and wheel and carefully explains the purpose of each machine and how to use it.

Discusses the properties and characteristics of light and its uses, covering refraction, lenses, mirrors and their use in astronomy, the color spectrum, solar energy, lasers, and fiber optics.

Experiments and activities help students learn how the human body stays fit, describing how the muscles, heart, sweat glands, and other systems work together to help people stay healthy.

Introduces children to the forces of magnets, explaining how they work and what they are used for in everyday life.

Experiments and activities help students learn the importance of saving water, explaining the water cycle, groundwater pollution, simple ways they can conserve water, and other related topics.

Helps children learn about electricity and circuits through simple experiments demonstrating basic concepts and facts.

Experiments and activities help children learn about recycling, explaining the importance of reducing and reusing materials and describing the different ways certain products can be recycled.

Features a brief discussion of water, where it comes from, and how it is used, and provides instructions for seven water-related science experiments.