Equal Groups Presentation Slides
3rd Grade Math • Unit 3: Multiplication & Equal Groups Standard: 3.OA.A.1
Lesson 1
Equal Groups and Multiplication
Discovering how equal groups unlock the power of multiplication!
Concept: Interpreting Products as Equal Groups
Materials Needed
- Individual whiteboards & dry-erase markers
- Connecting cubes or two-color counters
- Guided notes handout & pencil
Learning Target
I can explain how equal groups help us understand multiplication using pictures and models.
Ready to multiply? Let's get started!
Lesson 1 • Fluency Warm-Up
3 min
Fluency Practice
Complete the Fluency problems on your guided notes handout.
Goal:
Practice basic addition and subtraction facts to build speed and accuracy.
3:00
Focus Time
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • Fluency Answer Key
Check Work
1. 7 + 9 = 16
2. 15 − 6 = 9
3. 11 − 3 = 8
4. 12 − 5 = 7
5. 14 − 8 = 6
6. 6 + 6 = 12
7. 17 − 8 = 9
8. 8 + 8 = 16
9. 5 + 6 = 11
10. 20 − 7 = 13
11. 4 + 7 = 11
12. 13 − 6 = 7
13. 16 − 8 = 8
14. 8 + 7 = 15
15. 18 − 9 = 9
16. 9 + 9 = 18
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • Hook
5 min
Hook — The Mystery Shoe Problem
Look at the pairs of shoes below:
Student 1 👟 👟 2 shoes
Student 2 👟 👟 2 shoes
Student 3 👟 👟 2 shoes
Student 4 👟 👟 2 shoes
This morning, 4 students walked into our classroom. How many shoes came into our room? Turn and talk to your partner about how you figured it out!
Discuss with Your Partner:
- • Did you count by ones? By twos?
- • Did you notice groups?
- • How many groups? (4 groups)
- • How many in each group? (2 shoes)
Today's Big Idea
Equal groups help us understand multiplication!
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • Key Concept & Vocabulary
Vocabulary
Equal Groups
Groups with the SAME number of items.
Number of Groups
HOW MANY groups or sets you have.
Size of Each Group
HOW MANY items are inside each group.
Multiplication
Finding the TOTAL when you have equal groups.
Steps to Represent Equal Groups
1 Read
Read the problem carefully.
2 Groups
Find the number of groups.
3 Size
Find the size of each group.
4 Draw
Make or draw each group.
5 Total
Count the total (multiply).
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • I Do — Equal Groups
10 min
Teacher Model: 3 Solved Problems
Follow along on your notes! Watch how we identify the groups, group size, and equation.
Problem 1
There are 3 flowers. Each flower has 2 petals.
🌸 🌸 🌸 🌸 🌸 🌸
3 groups of 2 petals
Addition: 2 + 2 + 2 = 6
3 × 2 = 6 petals
Problem 2
There are 4 boxes. Each box has 5 crayons.
5
5
5
5
4 groups of 5 crayons
Addition: 5 + 5 + 5 + 5 = 20
4 × 5 = 20 crayons
Problem 3
At the library, there are 4 tables. Each table has 4 students.
4
4
4
4
4 groups of 4 students
Addition: 4 + 4 + 4 + 4 = 16
4 × 4 = 16 students
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • We Do: Practice Together
10 min
We Do — Let's Practice Together
Work together! Use counters or draw a picture on your whiteboard/notes.
4 Practice Problems
Problem 1 🐸 Count the Eyes
There are 4 frogs. Each frog has 2 eyes.
Groups: 4 Size: 2 Equation: 4 × 2 = 8 eyes
Problem 2 🔍 Match the Drawing
Which describes this drawing?
●●●● ●●●● ●●●●
A) 3 groups of 4 ✓ B) 4 groups of 3 C) 7 groups
Problem 3 🐔 Chicken Coops
A farmer has 5 chicken coops. Each coop has 4 chickens.
Groups: 5 Size: 4 Equation: 5 × 4 = 20 chickens
Problem 4 🐧 Penguin Exhibits
At the zoo, there are 3 penguin exhibits. Each exhibit has 6 penguins.
Groups: 3 Size: 6 Equation: 3 × 6 = 18 penguins
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • You Do: Partner Practice
10 min
You Do — Show What You Know
Solve these 4 problems in your guided notes. Draw pictures and write equations!
4 Challenge Problems
Problem 1 🧁 Muffin Trays
A baker made 3 trays of muffins. Each tray has 6 muffins.
___ groups of ___ ___ × ___ = ___ muffins
Problem 2 🪺 Bird Nests
There are 5 nests. Each nest has 4 baby birds.
___ groups of ___ ___ × ___ = ___ birds
Problem 3 🎨 Model Maker
Create an equal groups drawing for 7 groups of 3.
Draw 7 circles with 3 inside each 7 × 3 = ___
Problem 4 ⭐ Describe Arrangement
Look at this arrangement. Describe it and write the equation:
★★★★★★★ ★★★★★★★
___ groups of ___ Equation: ___ × ___ = ___
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • Closure / Reflection
5 min
Lesson Summary — Think-Pair-Share
Discuss these three questions with your partner before writing your reflection.
Question 1
What are equal groups?
Key idea: Every group must have the exact same number of items.
Question 2
How do equal groups help us understand multiplication?
Key idea: Multiplication is a quick way to count total items in equal groups.
Question 3
Give one example of equal groups you see in our classroom right now.
Key idea: Desks at tables, markers in packs, books in bins, chair legs!
Anchor Response:
"Equal groups have the SAME NUMBER in each group. When we have equal groups, we can use multiplication to find the total instead of counting by ones!"
I can explain how equal groups help us understand multiplication using pictures and models.
Lesson 1 • Check for Understanding
5 min
Independent Exit Ticket
Clear your desk and complete your exit ticket independently. Show your best work!
Standard: 3.OA.A.1
Question 1 Draw Equal Groups
Draw a picture that shows: 4 groups of 3.
Draw circles for groups and dots or counters inside. Write the multiplication equation!
Question 2 Word Problem Representation
Draw a picture that shows: There are 3 baskets. Each basket has 5 apples.
How many apples are there in all? Write the multiplication sentence to prove your answer.
I can explain how equal groups help us understand multiplication using pictures and models.
Equal Groups Guided Notes
3rd Grade Math • Unit 3: Multiplication
Lesson 1: Equal Groups & Multiplication
Name: ___________________________
Date: ___________________________
Target: I can explain how equal groups help us understand multiplication using pictures and models.
3.OA.A.1
Part 1: Fluency Warm-Up (3 Minutes) Fast Facts
1. 7 + 9 =
2. 15 − 6 =
3. 11 − 3 =
4. 12 − 5 =
5. 14 − 8 =
6. 6 + 6 =
7. 17 − 8 =
8. 8 + 8 =
9. 5 + 6 =
10. 20 − 7 =
11. 4 + 7 =
12. 13 − 6 =
Part 2: Hook — The Mystery Shoe Problem 5 Minutes
This morning, 4 students walked into our classroom. How many shoes came into our room?
👟👟
Student 1 👟👟
Student 2 👟👟
Student 3 👟👟
Student 4
Big Idea:
Equal groups help us understand multiplication!
4 groups of 2 = 8 shoes
Equal Groups Groups with the SAME number of items.
Number of Groups HOW MANY groups you have (first factor).
Size of Each Group HOW MANY in each group (second factor).
Multiplication Finding the TOTAL when groups are equal.
Part 3: I Do — Teacher Model (Filled In for Reference) Study the Steps
Problem 1:
There are 3 flowers. Each flower has 2 petals.
Groups: 3 | Size of each: 2
🌸🌸 🌸🌸 🌸🌸
3 groups of 2
2 + 2 + 2 = 6
3 × 2 = 6 petals
Problem 2:
There are 4 boxes. Each box has 5 crayons.
Groups: 4 | Size of each: 5
[5] [5] [5] [5]
4 groups of 5
5 + 5 + 5 + 5 = 20
4 × 5 = 20 crayons
Problem 3:
At the library, there are 4 tables. Each table has 4 students sitting at it.
Groups: 4 | Size of each: 4
[4] [4] [4] [4]
4 groups of 4
4 + 4 + 4 + 4 = 16
4 × 4 = 16 students
Page 1 • Follow along with presentation • Turn over for Guided and Independent Practice
Lesson 1: Practice & Application Name: ____________________________________
Equal Groups Exit Ticket
Exit Ticket
Equal Groups & Multiplication
Standard: 3.OA.A.1
Name: ___________________________________
Date: ___________________
Score: _____ / 4
1. Draw a picture that shows: 4 groups of 3.
(2 pts)
Addition sentence: ____________________ Equation: ___ × ___ = ___
2. There are 3 baskets. Each basket has 5 apples.
(2 pts)
Number of groups: _____ Size of each group: _____ Total: ___ × ___ = ___ apples
How do you feel about equal groups?
⚪ 1: Need help ⚪ 2: Getting there ⚪ 3: I got this!
CUT HERE TO SEPARATE COPIES
Exit Ticket
Equal Groups & Multiplication
Standard: 3.OA.A.1
Name: ___________________________________
Date: ___________________
Score: _____ / 4
1. Draw a picture that shows: 4 groups of 3.
(2 pts)
Addition sentence: ____________________ Equation: ___ × ___ = ___
2. There are 3 baskets. Each basket has 5 apples.
(2 pts)
Number of groups: _____ Size of each group: _____ Total: ___ × ___ = ___ apples
How do you feel about equal groups?
⚪ 1: Need help ⚪ 2: Getting there ⚪ 3: I got this!