Problem-oriented v.s. Factual format

Subjects who received information in a problem-oriented form may have generated their own ideas, maybe within half a second, before scanning the latter sentences of the answer.

For me, it's like the question helps the learners to set a very clear learning goal at the first place, which can activate the thinking process of the learners, rather than passively reading and memorizing some plain "facts".

p. 121 Under these circumstances, subjects have an opportunity to first reconstruct their initial learning context and then find the relevant answers for each problem that they see.

Bransford et al. (1990) Anchored Instruction  

This gives me some inspiration on our final project design. How you do modeling to the students? Based on this statement, preferably, we may design the classification process to be a "problem-oriented" form, by
firstly given the goal of classification,
then observe main features (similarities/differences) of provided objects,
then draw conclusions based on some criterion.
In this way, the students may experience "problem-solving" thinking process to further establish their own problem-solving abilities.

Besides all the above, I found it's a very good way in marketing/advertising to catch the audience's attention by asking a question. For a very simple example, compare these two sentences and ask yourself which one may stimulate your curiosity?
1. Frito Lay grows the best snacks on earth.
2. Who grows the best snacks on earth? Frito Lay!
Same strategy can apply to many other field, such as article titles, book names, etc.

In the above case, you may remember "the best snacks on  earth" in the first statement, while in the second one, you remember "Frito Lay".