Fat Brain Toys Chaos Machine Brilliant pendulum kit for learning hands-on about the real concepts and math behind the Chaos Theory; embark on a thrilling journey into the world of chaos! Kids connect pendulum pieces and attach them to a magnetic surface to create wildly swinging contraptions; start simple with a basic pendulum; explore chaotic systems by adding on more arms and angles; build 7 machines, then invent your own A powerful learning experience for ages 12 and up; high quality, safe materials for lasting durability, exceptional chaos experience; features cut-out wall protector for protecting appliances from magnetic mount Strengthens fine motor skills, visual-spatial skills; inspires scientific learning, creativity; physics comes to life! Learn how pendulums work, discover how to predict them; learn all about the Butterfly Effect Includes 12 axles, magnetic mount 7 pendulums, 4 large spacers, 4 small spacers, 12 nylon nuts, detailed instructions