ThinkFun HypnoGraph Drawing Machine and STEM Toy for Boys and Girls Age 8 and Up - Creates Mesmerizing Mechanical Art

Trusted by Families Worldwide - With over 50 million sold, ThinkFun is the world's leader in brain and logic games. Innovative and unique - The HypnoGraph uses prime number gears to create an amazing and unique drawing experience. What you get - The HypnoGraph STEM Toy and Drawing Machine comes with a base, turntable gear with outer ring, a t-arm, 13 repositionable gears, gear spindles, a gear crank handle, t-arm-to-gear connectors, t-arm-to-base connector, an adjustable pen holder and pen holder and connector, a gear puller and spindle tightener, a fine-tip drawing pen and 20 paper discs. Clear instructions – Easy to understand with a clear, high quality instruction manual. You can start drawing immediately! Develops critical skills – Playing with the HypnoGraph can help you understand mathematical concepts like the Greatest Common Factor, and how adjusting the prime number gears affects the drawings.