Build your very own ROLLER COASTER MARBLE RUN completely from this book! Press out the pieces, assemble your roller coaster and watch as your structure grows. Then race marbles from two starting points and see which marble comes out first! With extra information about the science behind your build, this book will keep master builders entertained for hours.

Pearl and Pascal take their coding adventures to the amusement park in this follow-up picture book from our Girls Who Code program! Pearl and her trusty rust-proof robot, Pascal, are enjoying a day out at the amusement park. Spinning teacups, ice cream, and of course: rollercoasters! Through the use of code, Pearl and Pascal can keep track of their ride tokens and calculate when the line is short enough to get a spot on the biggest ride of them all--the Python Coaster. Variables, if-then-else sequences, and a hunt for a secret hidden code make this a humorous, code-tastic day at the amusement park!

All Too Human is a new-generation political memoir, written from the refreshing perspective of one who got his hands on the levers of awesome power at an early age. At thirty, the author was at Bill Clinton's side during the presidential campaign of 1992, & for the next five years he was rarely more than a step away from the president & his other advisers at every important moment of the first term. What Liar's Poker did to Wall Street, this book will do to politics. It is an irreverent & intimate portrait of how the nation's weighty business is conducted by people whose egos & idiosyncrasies are no sturdier than anyone else's. Including sharp portraits of the Clintons, Al Gore, Dick Morris, Colin Powell, & scores of others, as well as candid & revelatory accounts of the famous debacles & triumphs of an administration that constantly went over the top, All Too Human is, like its author, a brilliant combination of pragmatic insight & idealism. It is destined to be the most important & enduring book to come out of the Clinton administration.

Build a nearly two-foot-tall marble run, and learn all about the scientific principles behind your creation with this interactive science book and kit. This is no ordinary maker kit. It contains everything kids need to build a nearly two-foot-high working marble run, complete with wheels, ramps, stops, and drops—two marbles included. As construction begins, young engineers in training can read along in the accompanying 64-page science activity book to test theories, perform experiments, and learn all about mechanics, speed, forces, and other scientific principles that relate to their marble run. Focusing on STEM concepts in a fun and engaging way, this kit is a great option for an upcoming science fair or a quiet rainy day at home.

Encourage tinkering, curiosity, and creative thinking in children of all ages with these 55 hands-on activities that explore art, science, and more The creator of the highly popular creativity site for kids, Tinkerlab.com, now delivers dozens of engaging, kid-tested, and easy-to-implement projects that will help parents and teachers bring out the natural tinkerer in every kid—even babies, toddlers, and preschoolers. The creative experiments shared in this book foster curiosity, promote creative and critical thinking, and encourage tinkering—mindsets that are important to children growing up in a world that values independent thinking. In addition to offering a host of activities that parents and teachers can put to use right away, this book also includes a buffet of recipes (magic potions, different kinds of play dough, silly putty, and homemade butter) and a detailed list of materials to include in the art pantry.

Trixie and Tracky are disappointed when the wooden train set they join is full of bossy trains and snoring train tracks.

Have you ever wondered what comets are and why astronomers spend so much time studying them? Now, a comet expert and an astronomical historian have come together to produce this unique book. Using their several decades of teaching experience, the authors have concisely presented the information you need to comprehend these majestic apparitions that grace our night skies. No mathematical proficiency is needed. In fact, this book doesn't contain a single equation. Comets are cosmic Rosetta stones, bridging our current knowledge by digging back to the earliest days of our solar systems. How did life arise on Earth? Did comets play a significant role in bringing water and the necessary organic matter to our early Earth? How about the dinosaurs? Were they driven to extinction by a cometary impact 66 million years ago? Comets may be both the enablers and destroyers of life on Earth as we know it. These are some of the tantalizing questions discussed here. If you so desire, steps are given to join the ranks of amateur comet hunters. Astronomy is one of the last sciences where amateurs play a significant role. Your reward for discovery? A comet officially bearing your name in the history books. The next great comet is on its way, we just do not know when it will arrive. Armed with this book, you will be ready to enjoy this unforgettable event.