When Portland, Ore., elementary school teacher Sacha Luria decided last fall to try out a new education strategy called “flipping the classroom,” she faced a big obstacle, says the Hechinger Report. Flipped classrooms use technology—online video instruction, laptops, DVDs of lessons—to reverse what students have traditionally done in class and at home to learn. Listening to lectures becomes the homework assignment so teachers can provide more one-on-one attention in class and students can work at their own pace or with other students. But Luria realized that none of her students had computers at home, and she had just one in the classroom. So she used her own money to buy a second computer and begged everyone she knew for donations, finally bringing the total to six for her 23 fourth-graders at Rigler School. In her classroom, students now alternate between working on the computers and working with her. So far, the strategy is showing signs of success. She uses class time to tailor instruction to students who started the school year behind their classmates in reading and math, and she has seen rapid improvement. By the end of the school year, she said, her students have averaged two years’ worth of progress in math, for example…