Diphthongs—those gliding vowel sounds—can be tricky for early readers, but with the right strategies, they become a fun and essential phonics skill. Teachers are using structured, research-based ...

To the editor: Are you kidding me (“Parents, chill: Why you don’t need to teach your 3-year-old to read,” June 24)? My son, though admittedly precocious, was exposed to phonics, diphthongs, numbers ...