Welcome to the 21st century classroom: a world where students watch lectures at home — and do homework at school. It's called classroom flipping, and it's slowly catching on in schools around the country.
When Jessica Miller, a high school sophomore in rural Bennett, Colo., sits down to do her chemistry homework, she pulls out her notebook. Then she turns on an iPad to watch a video podcast. Whenever the instructor changes the slide, Miller pauses the video and writes down everything on the screen.