1st Grade · Grammar · L.1.5.A, L.1.1

Synonyms Lesson Plan for 1st Grade

A ready-to-teach synonyms lesson for 1st Grade. Everything below is classroom-tested structure: an objective, a 45-minute sequence, a way to check who got it, and 6 printable practice pages.

Approximately 45 minutes

Learning objective

Identify words with similar meanings as synonyms
Replace words in sentences with fitting synonyms
Build vocabulary through practice with synonym pairs

Materials

Match the synonyms - Music
Words that mean the same thing - National Thesaurus Day
Identify synonyms and antonyms - Elephant
Match the synonyms - Tiger
Identify synonyms and antonyms - Merry
Unscramble the words to find the synonym - Monkey
Pencils, and whiteboard space for the modeled examples

Lesson steps

1. Notice it first (5 min)
Put four examples of synonyms on the board and ask students which one is the odd one out. There is rarely a single right answer, and the arguing is the lesson.
2. Name the rule (I do) (8 min)
Work through two examples of synonyms out loud, showing the clue you used each time. Students copy the method, not the answer, so narrate what you looked at first.
3. Fix them together (we do) (12 min)
Work through four or five sentences as a class. Mix in one that is already correct, because students who are pattern-matching rather than thinking will "fix" it anyway and reveal themselves.
4. Independent practice (you do) (15 min)
Hand out "Match the synonyms - Music". Students work independently. Circulate and watch for the students who can do the exercise but cannot explain the rule, since that gap shows up later in their writing.
5. Apply it to real writing (5 min)
Students find one place in their own writing folder where synonyms applies, and fix it. This is the step that moves the rule from worksheet to writing.

Check for understanding

Read the last two sentences of each student's independent work. Applying synonyms correctly in their own sentence matters more than getting the exercise items right.

Differentiation

Extra support. Students who stall: pull them into a small group and rebuild synonyms with concrete materials or a simpler text before asking for the written work again. Do not send the page home as homework, it will just rehearse the misunderstanding.

Extension. Students who finish early: ask them to write their own synonyms problem for a partner to solve, then check the partner's work. Creating a problem is harder than solving one and it surfaces whether they really understand synonyms.

Skills covered in this lesson

Synonyms

Questions teachers ask about teaching synonyms

What are synonyms and when should first graders learn them?

Synonyms are words with similar meanings (big/large, happy/glad, fast/quick). First graders are introduced to synonyms as part of vocabulary development (CCSS L.1.5d), which asks students to distinguish shades of meaning among related words. Learning synonyms helps first graders expand their writing vocabulary beyond basic sight words.

How do you teach synonyms to first graders?

Introduce synonyms by showing how word choice affects writing: The big dog barked vs. The enormous dog barked. Use word walls organized by synonyms for common overused words like said, went, and big. Worksheets that ask students to replace a dull word with a more interesting synonym in a sentence are engaging and practical.

Why are synonyms important for first-grade writers?

Synonym knowledge helps first graders avoid repetition in writing and choose words that more precisely express what they mean. CCSS L.1.5d focuses on shades of meaning, helping students understand that whisper is quieter than talk, which is quieter than shout. This vocabulary precision supports both reading comprehension and writing quality.