The cool consonants are single consonant letters which can have two different phonemes. We call the consonants which make 2 sounds the “Cool Consonants” because they are cool as they can make two sounds!
The cool consonants letters are;
G which can sound like /j/ as in “giraffe” or as /g/ as in “goat”
C which can sound like /s/ as in “face” or /c/ as in “cat”
Y which can sound like /y/ as in yellow or sounds like an /aɪ/ sound as in try, bye, fly, or as an /iː/ as in hungry or happy.
S which can sound like S as in spider or Z as in scissors