special correspondent john tulenko of "education week" reports. >> reporter: it takes just 10 minutes to cross through gillette, wyoming. this small city sits in the northeast corner of the state, surrounded by hundreds of miles of prairie. but schools here in campbell county are on the edge of something big: the next generation science standards. >> you are going to build a strand of d.n.a., then you are going to decode it and figure out what that d.n.a. actually says. >> reporter: for christy mathes, at sage valley junior high school, the new standards are about learning to think like a scientist. >> there's a lot of really good stuff in them. every standard is a performance task. it's not, the child needs to memorize these things, it's the student needs to be able to do some pretty intense stuff. we are analyzing, we are critiquing, we are creating, we are actually doing the science. >> reporter: take today's lesson on genes. mathes had her students pick fictional "character cards" with the name, height, hair and eye color of each character. >> this is a secret, just you and your g