ABSTRACT
This chapter describes mathematical curiosities to generate an interest in a particular subject. It emphasizes some playful elements contained in mathematical puzzles or logical reasoning. Caution should be taken that mathematical curiosities, which in and of themselves generate interest, should not dominate the lesson; rather the justification or explanation of the curiosity should take center stage only briefly, as it introduces the topic of the day. To justify this curiosity should motivate students. This type of curiosity can often be explained with simple algebra and yet can serve as a fine motivator when properly presented. This motivational device will begin with the students being shown an arithmetic curiosity then trying to find other examples of it and finally attempting to explain its underlying "secret". Students usually begin to think about the likelihood of 2 people having the same date out of a selection of 365 days.
