Railcar implosion physics stacks the deck
A railcar can implode, given a sufficient difference in air pressure outside compared to air pressure inside the railcar.
Academics
Geometry PARCC question: equidistant in plane
Circles are defined as all points in a plane equidistant from a given point, the center. All radii of a circle are congruent by definition.
Terrorists kill more than 90 in Belgium, Iraq
Terrorist attacks from the US to the Middle East, and now to Belgium, have killed dozens of people. Officials offer condolences, work to combat terrorism.
Law school case serves as a college caveat
Beware promises colleges and grad schools make about employment after attending: some of the numbers are cooked.
Geometry PARCC question: diagonal length
The diagonal of a square can be determined using the Pythagorean Theorem or, just as well, with trigonometry.
The best bees keep expertise to themselves
Honeybees, especially those who've been around the block a few times to gather nectar, don't like to share their knowledge with rookie bees.
Geometry PARCC question: triangle dilation
When it comes to dilations of triangles, can you recognize similar and congruent parts of the before and after images?
Trump & Clinton win primaries in Illinois
Donald J Trump won the Illinois Republican primary and those in FL and NC. Hillary Clinton won the Democratic primaries in IL, NC, FL, and Ohio.
Algebra 1 PARCC question: exponential websites
Modeling real-world situations sometimes requires a linear model, sometimes an exponential model, sometimes a coffee model.
Supreme Court won’t review rap-song suspension
A student who posted a rap video was suspended because what he said was threatening, but the US Supreme Court refused to review that suspension.