THURSDAY, JANUARY 1 ✳
The playroomSCIENCE EDITION / ORIGINAL POLYKROM PUZZLES

Time Machine.

Put five moments in order, earliest first. 100 on the first try, 70 on the second, 40 on the third.

Try 1
  1. 01Eratosthenes measures Earth
  2. 02Penicillin discovered
  3. 03DNA double helix revealed
  4. 04Darwin’s Origin of Species
  5. 05Galileo’s telescope
Use the arrows to reorder, then check.