Dillon, J. (2013b, November 4). Set the bar high with a lot of cushions under it. Retrieved January 24, 2017, from SmartBrief

Part of it has to do with posing more challenges that are complex to our students. If a problem is easy, it’s embarrassing to get it wrong. If a problem is so complex even the teacher has not figured out the answer yet, failure becomes a step toward success. Kids are more likely to spend hours instead of minutes working on these kinds of challenges, because they are worth the effort they take to solve.

Best Practices