Her story came to light when her secret papers were finally declassified in 2015. From thwarting notorious rumrunners with only paper and pencil to “counter-spying into the minds and activities of” Nazis, Elizebeth held a pivotal role in the early days of US cryptology. No code was too challenging for her to crack, and Elizebeth’s work undoubtedly saved thousands of lives. Extensive back matter includes explanations of codes and ciphers, further information on cryptology, a bibliography, a timeline of Elizebeth’s life, plus secret messages for young readers to decode.

    Although he is an inventor, he has never made anything that works perfectly, and that's because he hasn't yet found a truly fantastic idea. But when he takes his family fishing on Lake Michigan, his daughter Virena asks, "Have you ever wondered what it's like to be a fish?"—and Papa is off to his workshop. With a lot of persistence and a little bit of help, Papa—who is based on the real-life inventor Lodner Phillips—creates a submarine that can take his family for a trip to the bottom of Lake Michigan.

    in full color. Youngsters can celebrate the 500th anniversary of Columbus's fateful voyage with this dramatic, easy-to-read account of a pivotal moment in American history. "

    As an adult, she dives even deeper. Whether she's designing submersibles, swimming with the whales, or taking deep-water walks, Sylvia Earle has dedicated her life to learning more about what she calls "the blue heart of the planet." With stunningly detailed pictures of the wonders of the sea, Life in the Ocean tells the story of Sylvia's growing passion and how her ocean exploration and advocacy have made her known around the world. This picture book biography also includes an informative author's note that will motivate young environmentalists.Life in the Ocean is one of The Washington Post's Best Kids Books of 2012

    The people needed a green place to be -- a park with ponds to row on and paths for wandering through trees and over bridges. When a citywide contest solicited plans for creating a park out of barren swampland, Calvert Vaux and Frederick Law Olmsted put their heads together to create the winning design, and the hard work of making their plans a reality began. By winter, the lake opened for skating. By the next summer, the waterside woodland known as the Ramble opened for all to enjoy. Meanwhile, sculptors, stone masons, and master gardeners joined in to construct thirty-four unique bridges, along with fountains, pagodas, and band shells, making New York's Central Park a green gift to everyone. Included in the end matter are bios of Vaux and Olmsted, a bibliography, and engaging factual snippets.

    Tutored by her father, the mathematician Theon, Hypatia quickly became an authority in the subjects of mathematics, astronomy, and philosophy. Word spread of her brilliance, and scholars from all over the world journeyed to Alexandria to seek her teachings.

    As part of his duties Jim is in charge of the ship's cat, a beautiful tortoiseshell that also appears happy to be on board. He calls the cat by the ship's construction number, 4-0-1, certain that she will bring him good luck. And he's delighted when 4-0-1 shortly gives birth to a litter of kittens. But once the ship's trial runs are completed and it's ready to launch to sea, Jim notices that 4-0-1 is nowhere to be found. He's got to find her--the Titanic can't cast off without her lucky cat. Jim is faced with a decision that will affect the rest of his life.

    Text and photographs of Plimoth Plantation follow a pilgrim girl through a typical day as she milks the goats, cooks and serves meals, learns her letters, and adjusts to her new stepfather.

    46 color illustrations.

    Children's Choice Award winner Bethany Barton applies her signature humor to the scariest subject of all: math!Do multiplication tables give you hives? Do you break out in a sweat when you see more than a few numbers hanging out together? Then I'm Trying to Love Math is for you! In her signature hilarious style, Bethany Barton introduces readers to the things (and people) that use math in amazing ways -- like music, and spacecraft, and even baking cookies! This isn't a how-to math book, it's a way to think differently about math as a necessary and cool part of our lives!

    Instead, he became a poet. His life on a farm in New Hampshire inspired him to write “poetry that talked,” and today he is famous for his vivid descriptions of the rural life he loved so much. There was a time, though, when Frost had to struggle to get his poetry published. Told from the point of view of Lesley, Robert Frost’s oldest daughter, this is the story of how a lover of language found his voice.