So the challenge thing comes back to the instruction of designer: what are you for on this access?

这样，教育设计者,又重新面临着挑战：,你会支持这项技术吗？

麻省理工公开课 - 媒体、教育、市场课程节选

And because we knew during registration that we just had a number of kids who were out of school for three months, six months, were not in any school at all, we needed it to bring back direct instruction.

NPR: Post-Katrina, New Orleans Turning to Charter Schools

Now the plan is for instruction in counterinsurgency to spread back to the U.S. to prepare forces heading to Iraq so that they are thinking counterinsurgency by the time they get here, he said.

NPR: Baghdad School Trains Troops to Combat Insurgents

Instead, he said, they continued to talk back, disregard his instruction and showboat on the court.

FORBES: Anatomy of a High School Basketball Player Mutiny