Illustrates the inside of the ear and how it relates to balance. Shows how you hear and provides a "portrait of a sound." Describes ear problems, loudness and answers questions such as "Why do your ears pop?" and "What are the spins?" Includes fun facts ("Sounds travel 4 times fast in water than in air!") and includes fun projects for the home or classroom that to show how the ears and hearing work. Suitable for 8-12 year olds. Colorful, anatomically correct illustrations Bright colors and bold figures make learning fun. Available in 2 mounting styles. Size: 20" x 26"