After playing a video clip of the Scarecrow from the Wizard of Oz, just after he was 'given brains' and he mentions how the Pythagorean Theorem works have students look for precision in his statement.  This site helps you challenge students to be critical mathematicians and make the Scarecrow's statement more precise.  A link to the video clip is embedded on the page.

This problem provides a context for a real life application for finding the least common multiple of two numbers.