Give me a place to stand and with a lever (and some algebra) I will move the whole world.
Save time with this clever thinking.
Puzzles that are like Sudoku, but trickier!
The unification of logic and algebra.
Sometimes x is unknown, and sometimes it's unknowable.
If 4 cows make 4 gallons of milk in 4 days, how much milk do 8 cows make in 8 days?
A powerful language for the very large and the very small.
2, 5, 10, 17, 26... What comes next?
Mostly, we just want to see the collisions!
Bang! Now it's huge!
You'd be surprised how many contest these algebraic facts.