experiments

Uses simple observations and experiments to explore the human body and how it works.

Provides an introduction to how electricity is generated, conducted, and used. Includes simple experiments.

Clarifies the study of the forces and principles involved with weather through the use of models and associated activities.

Suggests experiments and projects illustrating basic principles and phenomena of meteorology, including precipitation, temperature, wind, and seasonal changes.

Introduces the principles of sound and includes instructions for a variety of experiments examining such topics as echoes, acoustics, and the speed of sound.

Gives instructions for performing a variety of experiments, using easily available materials, that illustrate some basic principles of chemistry.

A basic introduction to plants with simple discussions of algae, fungi, roots, stems, leaves, flowers, and seeds, and including pertinent experiments.

Simple experiments demonstrate basic principles of sound and music.

Uses simple experiments to demonstrate the qualities and functions of such basic machines as the wheel, lever, and fulcrum.

Instructions for a variety of simple experiments examining the reflex, instinctive, and conditioned behavior of such animals as mealworms, fruit flies, and goldfish.