Onset and Rime are terms that technically explain the phonological units of a spoken syllable. Syllables are normally split up into two parts, the onset and the rime.
Onset- the initial phonological unit of any word which contains the initial consonant or consonant blend. However, not all words have onsets.
Rime- the string of letters that follow the onset which contains the vowel and any final consonants.
Recognizing rhyme- determining if words rhyme
Generating rhyme- identifying a word that rhymes with a given word
Categorization- given a set of 3 to 4 words, determining which one does not rhyme
Start with rhyming words that have sounds at the end that are made with distinct mouth movements that the student can see (e.g. tap, map).
Then move to other rhymes that end in consonants but are less visible when spoken (e.g. tan, man).
Eventually move to rhyming words that end with vowels rather than consonants (e.g. way, may).
Students identify words that rhyme by saying Yes/No. They can do thumbs up/thumbs down, point to the correct choice on the slides, or use their AAC system to respond.
Extension activity: Ask students to identify a word to add to the rhyming set by pointing to a picture or finding it in their AAC system.
Students identify words that rhyme by playing rhyming memory. This activity can be differentiated by adjusting the number of cards in play and by adjusting the complexity of the words. If the students have limited verbal ability, give them time to think about the words in their heads before asking if the pair rhymes.
Adjust the complexity of the task by increasing the field of choices. You can also have students select which word doesn't rhyme in a field of 3 to 4 choices.
Make it fun by playing "Slap it!" ~ Place 3 pictures cards in the middle (two that rhyme and one that is different). Have students slap the one that doesn't belong.
*Modification: Have students use eye gaze, a switch, or their AAC system to identify the correct choice.
Use the same cards as memory, or another set of cards with matching rhyming pairs. Deal five or six cards to the student and yourself, and place the remaining cards face down in the middle. Take turns trying to find rhyming pairs. Model the task by saying, for example, "Do you have a word that rhymes with 'bat'?" If the student does not have a match for you, Go Fish!
*Modification: Student can say just the one word or show the card to you. Again, model by saying "Bat-- I do not have a word that rhymes with 'bat.' Go Fish!"
Blending onset and rime- Given a word broken into onset & rime, student blends the sounds together to create the whole word
Segmenting onset and rime- Given a word, student is able to break the word into onset & rime
*Modification: Name a picture for the student (ex. "Star"). Show the student the word parts with closed fists (left fist - onset / right fist - rime). Put your fists together to show the blending of the parts and say the whole word. Have the student complete the picture puzzle for Star.
You could have the words pre-programmed on a switch or on the student's device for speech output.