Regular and Irregular Plurals
State Content Standard:
WA 1.5 – Identify and correctly use regular plurals and
irregular plurals.
Learning Objective:
Today we will write and use regular and
irregular plurals.
Activate Prior Knowledge
Vowels
a
e
i
o
u
Consonants – All the other letters of
the alphabet
b c d f g h j k lm
n p q r s t v w x y z
Concept Development
Today we will be working with words
that end with a y to write them in their
plural form.
Ex. lady
boy
daisy
There will be two types of plural
forms. Some will be regular plurals and
others will be irregular plurals.
A regular plural is a word that you add
an “s” to at the end.
When words end in a vowel and a y,
we add “s” at the end to make it
plural.
Ex. t oy +
s =
toys
Non - examples
book
+
s
=
books
car
+
s
=
cars
Checking for Understanding
TPS – Why did I just add an s to tray to make it
plural?
tray
+
s
=
trays
Irregular plurals are words that are not
typical, usual, or common because they
change spelling when talking about more
than one.
When words end in a consonant and a y
we drop the y and add “ies” to make
the word plural.
Ex. strawber ry/ + ies = strawberries
Non - examples
book
+
s
=
books
car
+
s
=
cars
Checking for Understanding
TPS – Why did I cross out the y and add “ies”
to make it plural?
puppy
+
ies
=
puppies
Importance
Why are we learning about regular and
irregular plurals?
To be able to write a plural correctly.
Skill Development
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
penny
penny +
ies = pennies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
berry
berry
+
ies = berries
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
k ey
key
+
s
=
keys
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
monkey
monkey +
s
=
monkeys
Closure
• What do you do if a word ends with a
consonant and a y?
Drop the y and add “ies.”
• Why is it important to learn regular and
irregular plurals?
To learn to write a plural correctly.
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
baby
baby +
ies = babies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
sky
sky
+
ies =
skies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
day
day +
s
=
days
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
fly
fly
+
ies =
flies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
la dy
lady
+
ies =
ladies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
daisy
daisy
+
ies = daisies
Make the word plural.
1.
2.
3.
4.
Look at the word.
Underline the last two letters.
Ask yourself: vowel – y ? = s
Ask yourself: consonant – y ? = ies
country
country +
ies = countries