Four pubTV stations are joining in a STEM Collaborative to help middle-schoolers in science, technology, engineering and math, the stations announced today (Sept. 30). But this is no dry and dull initiative. Students will use geometry, algebra and proportional reasoning to build a skateboard ramp, measure a roller coaster, whip up recipes and plan a rock n’ roll tour. Maryland Public Television, Alabama Public Television, Arkansas Educational Television Network and Kentucky Educational Television will develop the digital-media projects. Math By Design, Scale City, ProportionLand Park and Rock n’ Roll Road Trip are all online at stemcollaborative.org, along with supporting materials for educators.