Chapter 7 Knowledge learning and instruction ●7. I concept learning ●71. concept o A concept is a category under which specific elements may be grouped. e.g. a red ball, a red pencil, and a red chair are all instances of the simple concept "red.An “ even number” is defined as any integer(整数) that is divisible by two without a remainder, and that an "odd number” is one that is not evenly均匀地) divisible by two o Many concepts are far more complex and less well defined than the concept " red, the concepts such as justice, love, democracy are the ones that people may spend a lifetime trying to understand.Chapter 7 Knowledge learning and instruction ⚫ 7.1 concept learning ⚫ 7.1.1 concept ⚫ A concept is a category under which specific elements may be grouped.e.g. a red ball, a red pencil, and a red chair are all instances of the simple concept “red”. An “even number” is defined as any integer（整数） that is divisible by two without a remainder, and that an “odd number” is one that is not evenly(均匀地） divisible by two. ⚫ Many concepts are far more complex and less well defined than the concept “red”, the concepts such as “justice, love, democracy”are the ones that people may spend a lifetime trying to understand