{ "item_title" : "Simple Experiments with Pulleys", "item_author" : [" Chris Oxlade "], "item_description" : "Pulleys are simple machines that have many uses, from lifting an injured boater into a rescue helicopter to drawing a bucket of water from a wellThis book explains the science behind this helpful machine. Experiments, presented step-by-step and with photos, encourage students to engage with the pulleys in their own lives.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/61/533/819/1615338195_b.jpg", "price_data" : { "retail_price" : "12.75", "online_price" : "12.75", "our_price" : "12.75", "club_price" : "12.75", "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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