21.   Fifth-graders have to understand a concept and from that draw bar graphs or finish patterns.

22.   Following the steps takes precedence over understanding the concepts.

23.   For example, they must understand the concepts of where files are stored in order to be able to retrieve something downloaded from the Internet.

24.   He did not understand the concept of sales tax, or of cost.

25.   He understands concepts of same, different, bigger and smaller.

26.   Her ability to understand new concepts and flesh out solutions is something that will prepare Estrin for battle.

27.   He wants you to understand the concept.

28.   He said he was very patient with them, because he knew it would take a while for them to understand the concepts of the defensive and offensive systems.

29.   How will anyone be able to understand a concept when no basic knowledge is in memory.

30.   However, my children do not understand the concept of lawyer jokes and have not developed the same thickness of skin as their father.