PBS
Pbs Lesson Plan (Affluenza): Credit Quandaries
"Credit cards are not free money." Just how do credit cards work? This site provides a lesson in which students investigate the lure of credit card companies, the pitfalls of credit debt, and the impact of credit debt on our society....
Smithsonian Institution
National Museum of Natural History: American Mammals: Southeastern Shrew
In spite of its widespread distribution, the Southeastern Shrew remained very poorly known until a new trapping method, the pitfall trap, came into use in the 1970s and 1980s. Pitfall traps are traps sunk into the ground: small mammals...