Sample Words From List
prevent
optician
exhaust
digest
invent
digestion
suggest
adopt
prevention
electric
exhaustion
invention
Take a look at the sample words.
What do you notice about these words?
They are base words with -ion or -ian added.
What do you think digestion means?
(noun) the process of digesting; breaking down food so the body can use it
What do you think optician means?
(noun) a person who makes or sells eyeglasses
How do you think we could sort these words?
By the base word and its ending - base -t, t + -ion, base -ic, -ic + ian
Let's practice sorting the words. Practice Sort
What happen to the final sound of a base word when -ion is added?
The t sound changes to a /sh/ sound.
What happen to the final sound of a base word when -ian is added?
The ic /ik/ sound changes to a /sh/ sound.
How does adding -ian change the meaning of the word?
-ian refers to a person who does something, so a magician is someone who does magic.
How does adding -ion change the meaning of the word?
-ion changes the word to mean the act or result of, so suggestion is the result of something you suggest.
Does the spelling of the base word change when you add -ion or -ian?
no