Designers! Subject yourself to "15 unimaginably torturous CSS puzzles" at CSS Hell. Today, Marcos Acosta is your tour guide to the underworld. "What did I do to deserve this?", you ask. But you know ...

This is a classic mini-game Fifteen Sliding Puzzle. This option works in the browser, in it you need to specify a regular picture, the program itself will cut the picture into squares and mix them.

🎮 Play and challenge friends in Nối Từ, a Vietnamese word-chain Discord bot with tournaments, AI opponents, and a robust ranking system.

Across the country, educators continue to wrestle with big questions about math curricula. Two years ago, the California education board’s adoption of a long-gestating new math framework added more ...

Sean Donovan, math teacher at Brewer High school, teaching his Career Math class on October 28. After years of declining test scores the Maine department of Education last month announced what it ...

Far too many students enter math class expecting to fail. For them, math isn’t just a subject–it’s a source of anxiety that chips away at their confidence and makes them question their abilities. A ...