{ "item_title" : "An Investigation Into the Effects of Force on Objects Changes in Matter & Energy Grade 4 Children's Physics Books", "item_author" : [" Baby Professor "], "item_description" : "This Baby Professor book explains the laws of motion in terms that are appropriate for fourth graders. Energy, and its forms, as well as motion will be sufficiently defined to ensure understanding as the lesson progresses. Contact and field forces like friction, gravity and magnetism are also discussed. Physics sure is easy to understand when you have books like this around ", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/54/198/059/154198059X_b.jpg", "price_data" : { "retail_price" : "30.99", "online_price" : "30.99", "our_price" : "30.99", "club_price" : "30.99", "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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