Games linked from this page practice Common Core Standards:
K.RF.2.d – Isolate and pronounce the initial, medial vowel, and final sounds (phonemes) in three-phoneme (consonant-vowel-consonant, or CVC) words. (This does not include CVCs ending with /l/, /r/, or /x/.)
K.RF.2.e – Add or substitute individual sounds (phonemes) in simple, one-syllable words to make new words.
K.RF.3.a – Demonstrate basic knowledge of letter-sound correspondences by producing the primary or most frequent sound for each consonant.
K.RF.3.b – Associate the long and short sounds with the common spellings (graphemes) for the five major vowels.
K.RF.3.d – Distinguish between similarly spelled words by identifying the sounds of the letters that differ.
K.L.2.d – Spell simple words phonetically, drawing on knowledge of sound-letter relationships.