Step 3 in the classroom: Get a bunch of creative materials together and let the groups flesh out their ideas into physical prototypes. (edutopia.org)
Computer - aided - engineering tools allowed this engine to be developed in a short amount of time, with the very first physical prototype producing 500 hp inside a week of its assembly. (automobilemag.com)
Previously available software was too clunky to create the finely tuned designs needed for denim, making physical prototypes necessary. (fortune.com)