Experience the thrill of building and launching your own catapult with this STEM construction set from The Learning Journey. The Techno Gears Marble Mania set is perfect for kids 6 years and up who love to explore the world of physics and engineering. This box includes all the necessary parts to build a catapult launcher and explore the principles of motion and force. With the Marble Mania set, you can enjoy hours of fun while learning about the laws of physics. The set features a variety of building pieces, including gears, rods, and connectors, that allow you to construct the catapult launcher and explore the world of motion and force. This STEM construction set is perfect for young minds who love to build, explore, and learn about the principles of science and engineering.