Designed as a resource for educators, this guide provides a glossary of key terms and definitions, includes an overview of the concepts associated with gears, identifies student objectives for each investigation and offers plans and scripts to successfully present selected models and their associated activities.
Note: To pay by credit card, you must use PayPal. Please see our order form and follow the PayPal instructions at the top. Otherwise, prepayment must accompany orders of $25 or less. Please contact Carol Crociante at 215-568-6150 x280 for payment information. Shipping & handling charges are 12 percent for orders below $250, and six percent for orders of $250 or more, with a minimum S&H of $5.00. Shipping & handling for orders outside of continental United States are more.