Best Selling Books by Andrew Christensen

Canals and Dams: Investigate Feats of Engineering invites children ages 9 and up to explore the innovation and physical science behind the amazing waterways and barriers our world depends on. Trivia and fun facts illustrate engineering ingenuity and achievements from ancient aqueducts to the Suez Canal and the Hoover Dam. Readers will discover that engineers and builders alike put their lives on the line to advance civilization, experiencing triumphs and tragedies in building big. Through dazzling success and heartbreaking failure, they developed increasingly sophisticated tools and building methods.

Activities and projects encourage children to explore the engineering process and to try, try again through trial and error. They'll engage in hands-on explorations of buoyancy, Newton's third law of motion, and forces that push and pull structures. They'll create a paper-cup zip line, build an arch, and simulate a tsunami, while experimenting with gravity, hydroponics, and velocity. In Canals and Dams: Investigate Feats of Engineering, children will gain an appreciation for the important field of engineering as they develop their own building skills.

Over centuries and across cultures people have defied gravity in a quest to build the tallest, grandest structures imaginable.

Skyscrapers: Investigate Feats of Engineering with 25 Projects invites children ages 9 and up to explore the innovation and physical science behind these towering structures. Trivia and fun facts illustrate engineering ingenuity and achievements from the ancient pyramids to the Empire State Building. Readers will develop an understanding of how our modern, sophisticated building techniques and materials evolved over time.

Activities and projects encourage children to explore the engineering design process. They will engage in hands-on explorations of wind, test Newton's laws of motion, and experiment with the strength of different shapes. In the process they will learn about gravity, inertia, oscillation, and static electricity. Using various materials and engaging in trial and error, readers will construct their own towers and skyscrapers. Skyscrapers meets common core state standards in language arts for reading informational text and literary nonfiction and is aligned with Next Generation Science Standards. Guided Reading Levels and Lexile measurements indicate grade level and text complexity.

How did somebody come up with the idea for bridges, skyscrapers, helicopters, and nightlights? How did people figure out how to build them?

In 3D Engineering: Design and Build Your Own Prototypes, young readers tackle real-life engineering problems by figuring out real-life solutions. Kids apply science and math skills to create prototypes for bridges, instruments, alarms, and more. Prototypes are preliminary models used by engineers—and kids—to evaluate ideas and to better understand how things work.

Engineering design starts with an idea. How do we get to the other side of the river? How do we travel long distances in short periods of time? Using a structured engineering design process, kids learn how to brainstorm, build a prototype, test a prototype, evaluate, and re-design. Projects include designing a cardboard chair to understand the stiffness of structural systems and designing and building a set of pan pipes to experiment with pitch and volume.

Creating prototypes is a key step in the engineering design process and prototyping early in the design process generally results in better processes and products. 3D Engineering gives kids a chance to figure out many different prototypes, empowering them to discover the mechanics of the world we know.