That is reflected in the final product, which will feature 2,520 "precious objects," including 521 "first-class precious objects".
That frees up precious class time to work directly with students on projects, exercises or problem sets — the stuff that students would traditionally do at home.
The midday ceremony violated an internal Duke agreement established in 2006 that no such celebrations would be held during precious class time.
Finally, we transfer our findings to establish a precious class of soft cardinality constraints on XML data.
But is that the best use of precious class time?
Dead Poets Society taught me it's okay to take some precious class time to talk to kids about their lives and their interests.
First, in the form of Ms. Rain's class, it teaches Precious that she doesn't have to be part of the abusive legacy anymore---that she can love herself.
Of course, each class holds those precious few diligent students who never miss a day or an assignment, offer thoughtful commentary, provoke involved classroom discussions, and turn in beautifully-composed essays.
Similarly, Sal Khan and his virtual Khan Academy have gained renown for a library of online instructional videos that enable children master the basics at home, freeing teachers to use precious class time to focus on problem-solving practice instead of rudimentary lectures.
However, in the new and evolving era of online learning, the question of whether or not to waste precious class time on a lecture arises.
One strategy for prioritizing how to spend precious class time is to decide on which biological ideas in a course are most difficult to learn, are rooted in common misconceptions, and/or represent fundamental biological principles (National Research Council, 1999; AAAS, 2011; Coley and Tanner, 2012).
