With some scrap wood, rope, hammer, nails, and this book, build seven historic catapults including Ludgar the War Wolf, God's Stone Thrower, Cabulus, and the Wild Donkey -- simple yet sophisticated hurling machines that rely on the fundamentals of math and physics using levers, force, torsion, tension, and traction. Through these exciting projects, the colorful history of siege warfare comes to life -- the stories of Alexander the Great and the battle...

Design, arrange, construct, and experiment with Cool Engineering Projects! Kids can learn how to build a colorful working catapult, assemble a simple-machine maze, and more! Each workshop project includes easy-to-read, step-by-step instructions paired with photographs. Budding craftspeople and engineers will love learning how to use the tools of the trade to make one-of-a-kind creations. --Amazon.

Learn how to design, build, and customize every part of your castle and the surrounding area, from sturdy walls and deadly traps to dank, dark dungeons and sprawling villages. Each build has an exploded view to show you exactly which blocks to use, plus extra ideas to make every part of your kingdom unique. Packed with interesting facts about medieval life, full-color illustrations, and a foldout depicting the epic scale of the kingdom, this official...