A day before Glen Rose Elementary School second-graders made a field trip to Dinosaur Valley State Park on Tuesday, they got to see and hear all about the tracks and ask a park ranger questions thanks to a live video and audio feed. The feed was made possible by the Education Service Center Region XI in Fort Worth, which used a portable satellite dish trailer and other technology to set up the feed. Students were able to sit in a video-conferencing room at the GRISD's Technology Center and watch it all live.