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32 resources
- guideFree5 min read
Element Symbols: Chemistry's Times Tables
Math has a named fact layer parents watch for. Chemistry has one too, still unnamed: element symbols either become automatic or cost attention on every line.
- guideFree5 min read
Is Competition Good for Learning?
A teacher’s blunt words about racing to recite times tables, what researchers found testing competition, and a design that is safe for slower starters.
- guideFree5 min read
Is Game-Based Learning Effective? 34 Studies
A meta-analysis of 34 chemistry studies, a six-school experiment on the periodic table, and the answer kids give when researchers ask what helps them learn.
- guideFree5 min read
Should Students Memorize the Periodic Table?
The chart on the wall is a scaffold for some things and a crutch for others. What researchers found students should memorize, look up, and drill under a timer.
- guideFree5 min read
Why Students Forget Chemistry So Fast
Memory for chemistry fades fastest in the first days after the test. What researchers found about forgetting, and how to schedule practice for a flatter curve.
- guideFree4 min read
Your Kid’s Chemistry Homework: Why So Long?
Two hours of homework, and the answers are right. That pattern has a name, a cause you can test at the dinner table, and a fix measured in weeks.
- guideFree8 min read
The New Chemistry Regents (2026–27)
The first Physical Science: Chemistry Regents was in June 2026. The next sitting is January 26, 2027. What changed, how it's scored, and how to prepare.
- guideFree7 min read
How the Hunt Brothers Cornered Silver
In 1980 two Texas brothers drove silver from $6 to nearly $50 an ounce, then couldn’t meet their margin calls in the crash. Industrial metal is hard to corner.
- guideFree8 min read
What Happened to Collisions?
PlayMada wound down Collisions, its free chemistry game, in 2022. What happened, whether you can still use it, and what to use instead.
- guideFree7 min read
Why Your Kid Has Gaps in Chemistry
A class has one pace, but every kid is missing different pieces. Here's what mastery-based learning is and how we find each kid's gaps automatically.
- guideFree8 min read
Fireworks Chemistry: Every Color in the Sky
Fireworks are flame tests at full scale: strontium burns red, barium green, copper blue. The chemistry of firework colors, and the chemicals we retired.
- guideFree5 min read
Master the Periodic Table, Earn Real Money
The Element Mastery Prize is open June 12–Sept 15. Master all 118 elements and earn money: at least $25 for every kid who finishes, $250 for the fastest.