Why is it that a piece of metal doesn't float but a huge ship made of steel does? Here are answers to questions about density and flotation.
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David A. Adler is the author of nearly 200 books for children. He was a New York City mathematics teacher for nine years before becoming inspired to write his first book. When his wife gave birth to their first child, David stayed home to take care of his son and to write, which he has been doing ever since. He lives in Queens, NY with his wife Renee.
*Starred Review* In this engaging book on density, Adler explains the concept in terms a child can understand; he does so through straightforward text and basic density-related activities. The brief explanation that something’s density is “its weight relative to its size” is useful, but the varied ways of demonstrating the concept are even better. A loosely crumpled ball of aluminum foil floats in water, but a tightly packed ball sinks because of its greater density. A lump of modeling clay sinks, but shaped into a boat that “encloses air,” the same clay floats. Other activities show how the density of water changes when it’s frozen or made salty. The section on “guessing which things float and which things don’t” is particularly fine, not only because it’s challenging and fun but also because it leads kids to use elements of the scientific method without mentioning the term. Created with ink washes and drawings and “assembled digitally,” Raff’s jaunty, imaginative illustrations feature two curious children and their dog playing around with objects and water. It’s rare to find a picture book that uses simple hands-on activities so successfully, leading young children to a fuller understanding of a scientific concept. Preschool-Grade 2. --Carolyn Phelan
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Seller: ZBK Books, Carlstadt, NJ, U.S.A.
Condition: good. Raff, Anna (illustrator). Used book in good and clean conditions. Pages and cover are intact. Limited notes marks and highlighting may be present. May show signs of normal shelf wear and bends on edges. Item may be missing CDs or access codes. May include library marks. Fast Shipping. Seller Inventory # ZBM.1DSQ1
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Seller: SecondSale, Montgomery, IL, U.S.A.
Condition: Good. Raff, Anna (illustrator). Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc. Seller Inventory # 00068990918
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Seller: ThriftBooks-Atlanta, AUSTELL, GA, U.S.A.
Hardcover. Condition: Very Good. No Jacket. Raff, Anna (illustrator). Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 0.9. Seller Inventory # G0823428621I4N10
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Seller: ThriftBooks-Reno, Reno, NV, U.S.A.
Hardcover. Condition: Very Good. No Jacket. Raff, Anna (illustrator). Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 0.9. Seller Inventory # G0823428621I4N10
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Seller: ThriftBooks-Dallas, Dallas, TX, U.S.A.
Hardcover. Condition: Very Good. No Jacket. Raff, Anna (illustrator). Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 0.9. Seller Inventory # G0823428621I4N10
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Seller: Better World Books, Mishawaka, IN, U.S.A.
Condition: Good. Raff, Anna (illustrator). Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. Seller Inventory # 1015892-6
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Seller: Library House Internet Sales, Grand Rapids, OH, U.S.A.
Hardcover. Condition: Good. Dust Jacket Condition: Good. Raff, Anna (illustrator). Why is it that a piece of metal doesn't float but a huge ship made of steel does? Here are answers to questions about density and flotation. Former library book. Mylar protector included. Please note the image in this listing is a stock photo and may not match the covers of the actual item. Ex-Library. Seller Inventory # 123486300
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Seller: Ergodebooks, Houston, TX, U.S.A.
Hardcover. Condition: Good. Raff, Anna (illustrator). It can be surprising which objects float and which don't. An apple floats, but a ball of aluminum foil does not. If that same ball of foil is shaped into a boat, it floats! Why? And how is it possible that a huge ship made of steel can float? Answering these questions about density and flotation is David A. Adler's clear, concise text, paired with Anna Raff's delightful illustrations. Activities that demonstrate the properties of flotation are included. Seller Inventory # SONG0823428621
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Seller: Book Deals, Tucson, AZ, U.S.A.
Condition: Good. Raff, Anna (illustrator). Good condition. This is the average used book, that has all pages or leaves present, but may include writing. Book may be ex-library with stamps and stickers. 0.95. Seller Inventory # 353-0823428621-gdd
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Seller: Irish Booksellers, Portland, ME, U.S.A.
Condition: Good. Raff, Anna (illustrator). SHIPS FROM USA. Used books have different signs of use and do not include supplemental materials such as CDs, Dvds, Access Codes, charts or any other extra material. All used books might have various degrees of writing, highliting and wear and tear and possibly be an ex-library with the usual stickers and stamps. Dust Jackets are not guaranteed and when still present, they will have various degrees of tear and damage. All images are Stock Photos, not of the actual item. book. Seller Inventory # 0823428621-R
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