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I've never been a huge baseball fan, but I do like data. This interactive display shows the total expenditure of every Major League Baseball team (from 1998 out until a few years in the future). Clicking on a team in the top chart will break that expenditure down per player and show what each player makes per year. Just looking at this chart for a few minutes, I've come up with the following questions that could be used in a math class for a problem solving lesson. Some of these questions would also require the students to locate some additional data as well. * Is there a correlation between team expenditure and winning the Championship/making the playoffs/number of wins in a season? * What percent of a team's total expenses do "star players" take up? * Are star player's "worth it" for a baseball team? * How have team expenses changed over the past 15 years? * Are baseball players being paid more today than in the past or are their salaries just keeping up with inflation? * How much do today's baseball stars make in comparison to the stars of the late 90's and early 00's? Is this difference warranted? I'm sure there are plenty of better questions here that I'm missing.

"These maps, published in 1932 in the Atlas of the Historical Geography of the United States and available through the David Rumsey Historical Map Collection, illustrate how arduous travel was in the country's early history. In 1800, a journey from New York to Chicago would have taken an intrepid traveler roughly six weeks; travel times beyond the Mississippi River aren't even charted. Three decades later, the trip dropped to three weeks in length and by the mid-19th century, the New York-Chicago journey via railroad took two days. And the introduction of regional airlines in the 1920s made it possible to travel 1,000 or more miles in a single day." Possible applications for Westward Expansion

"Tables charting the chemical elements have been around since the 19th century - but this modern version has a short video about each one. We've done all 118 - but our job's not finished. Now we're updating all the videos with new stories, better samples and bigger experiments. Plus we're making films about other areas of chemistry, latest news and occasional adventures away from the lab." Interesting video resources for each element on the periodic table. This type of thing might be cool for students to produce/create. They could design an experiment around an element, videotape it, and put up the videos as a class/school.

"Empower your students to think critically about data, ask meaningful questions, and communicate their conclusions."