Your mission

The Frog King lost his crown, and the chest it is in has five locks. A fraction is a number, and every number has a spot on the number line. To find a fraction's spot, cut the space from 0 to 1 into equal PARTS. The bottom number tells how many parts. The top number tells how many parts to hop. Count the parts, not the marks. Zip the frog hid the clues all over the pond, so look closely and work together.

How to crack a lock

  • Pick any lock from the menu at the top. You can solve them in any order.
  • Read every clue before you start. One clue alone is never enough.
  • Use scratch paper. Draw pictures, make lists, and cross things out.
  • Tap the buttons to build your answer. Then press "Try the lock".
  • A lock will not tell you which part is wrong, so be sure before you try.

My badges

Teacher note

Teachers: type the password to see the answer key.