This is a teacher's guide meant to teach beginning sounds. You can modify it to meet any phoneme you wish.
Phoneme isolation is when you say the sound of focus. Then give two examples of familiar words using the sound. Phoneme blending is say each sound individually and slowly, then a little faster, with emphasis on the chosen phoneme and finally at regular speed. Onset and Rhyme, write the word on the board and then cross out the beginning phoneme and and a new sound. Say "change the /b/ to a /s/ and listen to them change the sound. Synthetic phoneme is the opposite of blending. You say is at a regular speed first, they must break it down sound by sound. Example: you say "bat", they say /b/ /a/ /t/. For analytical phoneme I give them small white boards. I say a word and they must write it down in their "sound boxes". They draw a line horizontally through the middle, dividing the board like a hamburger. At the top, they must first use and "x" to mark each individual phoneme they hear. So, if the word is "dog", they ought to put three "x"es at the top of the board. Then they vertical lines in between the "x"es to further show separation and below each "x", they have to write the letter(s) that represent the phoneme they think they hear. This takes practice, but they pick it up quickly. The more advanced they become, the less important the lines and 'x'es become. At the very beginning, I accept c or k for /k/ as well as c or s for /s/. Or, if the word is tall and they give me t/a/l, it's ok. I do make sure to emphasize that this is ONLY for sounds and although it helps with spelling, it isn't perfect. Finally spelling. These are their spelling words for the week or however long you focus on the phoneme. Clap them, snap them, hit the floor, pat their neighbor's leg or back, etc. Do each word at least three different ways. This is best followed up with reading simple books focusing on the phoneme you just taught. I have used this with adults (minus the spelling part where they clap and smack the floor!) as well as kindergartners with great success.