Teaching page · Grade 3 · Lesson 18
Words with a suffix
A suffix is added to a base word that can usually still be seen.
What it is
A suffix is an ending added to a word that already exists: jump + -ed. Spell the base word first and the ending second, and most of these words stop being hard — because you already knew the base.
Watch it built
1Say the whole word and find the word hiding inside it.
jumped — the word inside is jump
2Write the base word.
jump
3Add the ending you heard.
jump + ed → jumped
One more
helping
↓
help + ing → helping
Remember
Find the word inside. Write it, then add the ending.
Ask yourself: “What is the base word underneath?”
Remember
Base word first, then the ending.
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