On your iPhone iPad or iPod touch tap the Insert button tap the Media button then tap Equation. READThis only works with a 7 digit phone number. TExES Core Subjects Math 4-8.
Intuitively type or handwrite with no tricky math code to learn.
Add to this the last 4 digits of your phone number. Breaking the ice can be a tough task for anyone. Maybe what you give me we call X and what I give you we call Y. Middle and High School.