Another reason why printable questions and answers are so helpful comes from the reality that you can make as lots of copies as you require for your class projects. There are some situations where it would be more convenient (and for that reason cost-effective) to just offer the students one set of answers instead of a whole book or lesson. You might want to do some group work on an upcoming project that needs numerous long hours of description. In this case, it would be more affordable to simply have a couple of group sheets printed rather than printing out a number of hundred pages of handouts.
Using group work in the classroom can be an excellent way to make classroom interaction more meaningful and remarkable. Often it’s much easier to ask questions to a bigger group rather than whittle your answers down to a handful.
Image source: baiblog.info