Below is an image of a page from the front of what I believe must have been a high school science textbook. I couldn’t possibly improve on it, so without further comment:
Why You Should Pay Attention in School
NOTE: Sunday a reader emailed me the link to the actual source of this image, a web comic named Saturday Morning Breakfast Cereal. I regret that this was not a page from an actual science textbook: in my opinion some enterprising text book publisher should license it. ;) Thanks for the pointer to a delightful new comic!