An apparently easy-looking math problem has left internet users scratching their heads. The elementary-grade problem looks simple enough to solve in seconds, but has tripped up the masses. The basic ...

Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

Here’s a mind-blowing experiment that you can try at home: Gather some children’s blocks and place them on a table. Take one block and slowly push it over the table’s edge, inch by inch, until it’s on ...

California’s public universities were once excellent at milling out mostly competent graduates (along with the requisite duds ...

Keep going. If you stack as many blocks as you can, what is the farthest overhang you can achieve before the entire structure topples? Is it possible for the tower to extend a full block length beyond ...