Years
A badge for every year Dave Oosterhuis found a sign. They are not easy to find.
Badges
Earned on the road. Some badges are secret until someone finds them.
- First SignPost your first sign.Earned Sep 8, 2005 with Wisconsin Border
- Another WayWrite a second, different way on the same sign.Earned Oct 11, 2005 with Northwest Incongruity
- States: 3Find signs in more states.Earned Oct 10, 2005 with Cresco
- Mile Markers: 5Find more signs.Earned Oct 11, 2005 with Northwest Incongruity
- Road TripFind two signs within three days of each other.Earned Oct 10, 2005 with Cresco
- Fair ShareUse ÷ in a way.Earned Nov 19, 2005 with University Math
- Square RootUse √ in a way.Earned Oct 9, 2005 with Oronoco
- Every NumberWrite a way that uses every number on a sign with at least three.Earned Sep 8, 2005 with Wisconsin Border
Dave Oosterhuis’s signs
√9 − √4 = 7 − 6Minneapolis No ParkingJan 17, 2006, Minnesota
36 ÷ 18 = √4University MathNov 19, 2005, Minnesota
2 + 4 = 6Northwest IncongruityOct 11, 2005, Iowa
48 + 1 = 49BrandonOct 11, 2005, Iowa
9 + 13 = 22CrescoOct 10, 2005, Iowa
√16 = 4OronocoOct 9, 2005, Minnesota
15 + 16 = 31Wisconsin BorderSep 8, 2005, Wisconsin