South Dakota ELA 1.L.4.b

ELA1st GradeLanguage

The Standard

1.L.4: Determine the meaning of unknown and multiple-meaning words and phrases based on grade 1 reading and content, using flexible strategies.

Use frequently occurring affixes to determine the meaning of a word.

South Dakota English Language Arts Standards (2025)

Teacher's field guide

What Students Need to Do: Students spot a word part added to the start or end of a familiar word. They use that part to work out what the new word means.
What Mastery Looks Like: A student explains that unhappy means not happy, reread means read again, and careful means acting with care. They use each word correctly in a sentence.
Common Misconceptions: Students may overlook un- and say unhappy means happy. They may think re- means do something fast, or that -ful means something is physically full.
How to Assess It: Give students an exit slip with unhappy, reread, and careful. Ask them to circle the added part and write what each whole word means.

Lesson moves

Give pairs cards marked happy, read, care, un-, re-, and -ful; have them build three words and explain each aloud.
Ask, 'If I say reread the note, what should you do, and how did re- help you know?'
Match word cards untie, repaint, and playful to picture cards; have students explain how each added part changes the meaning.
Show a 'Refill water bottles here' sign and ask what refill means and what re- adds.

Free download

A ready-to-print activity worksheet aligned to 1.L.4.b, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

Keep exploring

Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.