Last seen in:
- Wall Street Journal - Jun 23 2020 - Show Me the Way
- Wall Street Journal - May 9 2019 - Ball Bearing
- Wall Street Journal - Jun 26 2018 - Chanced Upon
- Wall Street Journal - Feb 5 2016 - A Breezy Solve
- Wall Street Journal - Sep 22 2015 - Pan-o-rama
- Newsday.com - Jul 24 2009
- New York Times - Jan 18 2009
- Newsday.com - Jul 13 2008
- Universal - May 10 2002
Related Clues:
- 'Sesame Street' lessons
- First steps
- It turns litmus paper blue
- Rudimentary teachings
- Blue litmus indicator
- First lessons
- "Sesame Street" teaching
- High-pH hydroxide
- The basics, as it were
- Basic training
- Grammar-school topic
- Early teachings
- Substance with a pH higher than 7
- Elementary lessons
- Grade school basics