{ "item_title" : "Simple Machines Made Simple", "item_author" : [" Ralph E. St Andre "], "item_description" : "This book allows you to present scientific principles and simple mechanics through hands-on cooperative learning activities. Using inexpensive materials (e.g., tape, paper clips), students build simple machines-such as levers, pulleys, spring scales, gears, wheels and axles, windmills, and wedges-that demonstrate how things work. Activities have easy-to-locate materials lists, time requirements, and step-by-step directions (usually illustrated) on presentation. Ideas for bulletin boards, learning centers, and computer-assisted instruction are an added bonus.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/56/308/104/1563081040_b.jpg", "price_data" : { "retail_price" : "32.95", "online_price" : "32.95", "our_price" : "32.95", "club_price" : "32.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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