Specially designed equipment helps children investigate the structure and function of two important senses: sight and sound. Topics include learning how a lens affects vision, measuring field of vision, and capturing sound waves. Kit contains vision disk, pinhole viewer, lenses, eye chart, masks, flashlight, rubber balls, extensive packet of activities. Lesson Guide. Vision Disk: Children can mearsure field of vision, reading field, and peripheral vision using this unique device. Shipped directly from the manufacturer. Not available with rush shipping. Delivery time estimated at 10-14 days or less. Gift wrap not available. Information on how to place your order by fax or by telephone. Grades 3-9. Product Number: AM6213 (Sight & Sound Health Lab), AM6015 (Vision Disk only), AM6016 (Pinhole Viewer only)