Uses a cow's eye to show the parts of the eye, including lens, pupil, iris, retina, cornea, sclera, choroid, vitreous humor and ciliary body. Expla...
Scenes in the eastern and Great Lakes regions provide settings for a study of woodland Indian life prior to European influence. Follows the daily l...
Shows clouds massing and evaporating, ice crystals growing under photomicrography, and air and water under varying pressures in a plastic box in or...
A young boy learns how to develop good posture habits and why good posture is important in helping him to look, feel, and perform better. For eleme...
Shows the factors required by green plants for life and growth: sunlight, carbon dioxide, water, and soluble minerals; and describes the process of...