Irregular Plurals and Past Tense
A 40-minute Grade 2 lesson on collective nouns, irregular plurals, irregular past tense verbs and adverbs.
Irregular Plurals and Past Tense is a free 40-minute Grade 2 English lesson plan for Common Core standard L.2.1 — use collective nouns, irregular plurals, reflexive pronouns and past tense verbs correctly. It is timed across 5 sections, gives the exact wording to use where the wording carries the mathematics, names 3 misconceptions with the teaching move that addresses each, and ends with an exit ticket and a printable worksheet with its answer key.
- Grade:
- Grade 2
- Length:
- 40 minutes
- Standard:
- L.2.1
Grade 2 · Language
L.2.1
Demonstrate command of the conventions of standard English grammar and usage when writing or speaking.
Objective
Students will be able to use irregular plurals and irregular past tense verbs correctly.
Students are successful when they can
- Forms irregular plurals without adding -s.
- Forms irregular past tense without adding -ed.
- Chooses an adverb where a verb needs describing.
What you need
- Word pairs on cards: mouse/mice, child/children, go/went, run/ran
- The printable practice sheet linked at the end of this plan
The lesson
Warm-up — add the -s
5 min- Make five regular plurals. Fast.
- Then try 'mouse'. The rule breaks. Note it.
Teach — a short list to learn
13 min- Say that most words follow the rule and a small list does not.
- Show six irregular plurals. Say each pair aloud twice.
- Do the same for six irregular past tense verbs.
- Show the common overgeneralisation — 'goed', 'mouses' — and say why it happens: the rule is being applied correctly to a word that ignores it.
- Add an adverb to a sentence and ask what it tells you about the verb.
“You used the rule correctly. This word just does not follow it.”
Guided practice — pairs and sentences
12 min- Pairs match singular and plural, present and past.
- They write a sentence using each irregular form.
- One sentence must include an adverb.
Independent practice
8 min- Students complete the grammar page.
- It mixes irregular forms with regular ones.
Close
2 min- Say five singulars. Take the plurals.
What goes wrong, and why
Each of these is a reasoning error rather than carelessness. The fix addresses the reasoning.
Says 'goed', 'runned', 'mouses'.
Why: The rule has been learned properly and is being applied to everything.
Fix: Praise the rule, name the exception. This is a sign of learning, not of failure.
Adds -s to an already irregular plural — 'childrens'.
Why: The word does not look plural, so the marker gets added.
Fix: Say it aloud. The double marking is audible.
Uses an adjective where an adverb is needed — 'he ran quick'.
Why: The adjective form is more common and sounds acceptable in speech.
Fix: Ask what the word describes. Describing the running needs -ly.
If they are not there yet
- Four pairs rather than six.
- Keep the pairs visible while writing.
If they finish early
- Find an irregular plural in a book.
- Write a sentence with an irregular plural and an irregular past tense.
- Sort ten verbs into regular and irregular.
Exit ticket
Yesterday I ___ (go) to the shop and saw three ___ (mouse).
What to look for: 'Went' and 'mice'. 'Goed' and 'mouses' means the exception list needs saying aloud daily rather than reteaching.
Printable practice for L.2.1
Free to print and copy, answer key included. Each sheet can generate a fresh set of problems for a retake.
- Collective Nouns and ReflexivesFinish each sentence.
Questions about Irregular Plurals and Past Tense
How long does the Irregular Plurals and Past Tense lesson take?
40 minutes, split across 5 timed sections: warm-up 5 min, teach 13 min, guided practice 12 min, independent practice 8 min, close 2 min. The minutes are stated per section and add up to the stated length, so the plan can be cut or extended at a section boundary rather than abandoned halfway.
Which standard does Irregular Plurals and Past Tense teach?
CCSS.ELA-LITERACY.L.2.1 — L.2.1, Language for Grade 2: “Demonstrate command of the conventions of standard English grammar and usage when writing or speaking.” In plain terms, use collective nouns, irregular plurals, reflexive pronouns and past tense verbs correctly.
What do I need to teach this lesson?
Word pairs on cards: mouse/mice, child/children, go/went, run/ran and the printable practice sheet linked at the end of this plan. Everything listed is either ordinary classroom equipment or a free printable from this site — there is nothing to buy and nothing to prepare beyond photocopying.
What mistakes should I expect in this lesson?
Three, each a reasoning error rather than carelessness: says 'goed', 'runned', 'mouses'; adds -s to an already irregular plural — 'childrens' and uses an adjective where an adverb is needed — 'he ran quick'. The plan gives the thinking behind each one and the teaching move that addresses the thinking rather than the symptom.
How do I know whether the lesson worked?
The exit ticket asks: “Yesterday I ___ (go) to the shop and saw three ___ (mouse).” 'Went' and 'mice'. 'Goed' and 'mouses' means the exception list needs saying aloud daily rather than reteaching. That tells you whether the class needs a reteach or a thirty-second conversation before you plan tomorrow.
Is there a worksheet to go with Irregular Plurals and Past Tense?
Yes — 1 printable L.2.1 worksheet, linked at the end of the plan and free like the rest of the site. Each one comes with an answer key and 25 versions, so the practice after the lesson can be a different paper on every desk.
Is Irregular Plurals and Past Tense free to use?
Yes. The plan, its printables and their answer keys are free to read, print and photocopy for your own class, with no account and no email capture. It was last reviewed on 7 September 2026. Please do not resell it or republish it as your own.
Last reviewed 2026-09-07. Aligned to L.2.1 of the Common Core State Standards for English language arts.