Please Explain!?

Question

"a mosaic of behaviors that teachers use in order to make what is to be learned intelligible, comprehensive, and learnable."

Answer 1

That means teachers use many methods of teaching because the students each have different ways of learning (ie. audio, visual, hands on...).  By teaching in more than one style (mosaic), the teacher can make the subject matter clear to the entire class.

Answer 2

Differentiated instruction and learning, learning modalities.