PITTSBURG — Justin Timberlake may never have imagined that his music would help second-graders learn math. Adding her own lyrics to Timberlake’s catchy song, “Can’t Stop the Feeling,” teacher Logan ...

‏Jami Jorgensen is the human jukebox of quadratic equations. “Anything that’s an algorithm, I have a song for it,” said the energetic middle-school math teacher in Hayward Unified, in the east Bay ...