Read two-syllable words with an open syllable that ends in a vowel and says its long sound, like the first syllable of tiger.
Rabbit split into two closed syllables. Tiger works differently: there is only ONE consonant in the middle, so you split right after the vowel instead: ti-ger. Because ti ends in a vowel, it is called an open syllable, and the vowel says its own long name.
Try robot (ro-bot) and music (mu-sic) the same way. When only one consonant sits in the middle, try splitting after the first vowel first.
Mastery looks like: They divide and read open-syllable two-syllable words and explain why the first vowel is long.
Common stumbles: Keeping the vowel short in an open syllable, or splitting after the consonant instead of after the vowel.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.