Another reason why printable questions and answers are so useful comes from the reality that you can make as numerous copies as you need for your class jobs. There are some situations where it would be more convenient (and for that reason economical) to just offer the students one set of answers instead of an entire book or lesson. You might want to do some group work on an upcoming job that requires several long hours of explanation. In this case, it would be more cost-effective to simply have a couple of group sheets printed instead of printing out a number of hundred pages of handouts.
Using group work in the classroom can be a great way to make class interaction more meaningful and memorable. Sometimes it’s simpler to ask questions to a larger group rather than whittle your answers down to a handful.
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