If you are looking for an affordable electrical-based engineering or makespace design challenge, Vibrobots and Bristlebots are the perfect challenge. When I introduce teachers and Media Specialists to the engineering design challenge of designing and building Vibrobots and/or Bristlebots I start off the lesson by having the teachers analyze simple Hexbugs. Hexbugs were invented years ago by Beam Robotics, they are a simple robot that moves about based on a vibrating motor. Hexbug models have become more complex throughout the years, with the later models sensing light, objects, and having the ability to swim in water. Students will choose their own materials to build their Vibrobot or Bristlebot, most materials can be purchased at your local dollar store, as well as using recyclable and re-usable materials. This engineering design challenge can be completed as an individual challenge or in groups of 2. Provide students with basic perimeters and goals to what you expect the Vibrobot or Bristlebot to perform. After students have completed designing, building and testing their models have each student or groups of students provide a demonstration of their model. Students are to discuss how they incorporated the engineering design cycle or design process, and related STEM terms. The following video gives an overview of the Vibrobot Engineering Design Challenge, a challenge that develops and strengthen 21st century skills, and aligns with Next Generation Science Standards. It’s an affordable electrical-based engineering design challenge perfect for the STEM classroom or Makerspace. For more information about the STEM and MakerEd professional staff development Dr. Diana Wehrell-Grabowski conducts worldwide complete the contact information on the contact page. [embedyt] https://www.youtube.com/watch?v=BgonaB2d9co[/embedyt]