Division as Sharing Lesson Plan

Complete lesson plan on division as sharing for 3rd grade students. Includes objectives, activities, exercises, and detailed explanations for mastering division concepts.

Division as Sharing: Lesson Plan Activities
1 Basic Sharing Activity
Sharing Activity 1
Problem: Sarah has 15 candies and wants to share them equally among 3 friends. How many candies does each friend get?
What is Division as Sharing?

Division as sharing: The process of distributing a total amount equally among a certain number of recipients. Each recipient gets the same amount.

Method: Sharing Equally
  1. Count the total items (15 candies)
  2. Count the number of people to share with (3 friends)
  3. Distribute items one at a time to each person
  4. Continue until all items are distributed
  5. Count how many each person received
Step 1: Identify the problem

We need to share 15 candies equally among 3 friends: 15 ÷ 3 = ?

Step 2: Distribute equally

Round 1: Each friend gets 1 candy → 3 candies given out, 12 left
Round 2: Each friend gets 1 candy → 3 more candies given out, 9 left
Round 3: Each friend gets 1 candy → 3 more candies given out, 6 left
Round 4: Each friend gets 1 candy → 3 more candies given out, 3 left
Round 5: Each friend gets 1 candy → 3 more candies given out, 0 left

Step 3: Count and conclude

Each friend received 5 candies.

15 ÷ 3 = 5 candies per friend
Final answer:

Each friend gets 5 candies because 15 shared equally among 3 people gives 5 to each person.

Key Rule:

• Equal sharing: Every person gets the same number of items

• Verification: 5 × 3 = 15 ✓

2 Group Sharing Activity
Sharing Activity 2
Problem: A teacher has 24 pencils to share equally among 6 students. How many pencils does each student get?
Important Terms:

Dividend: The total number being shared (24 pencils)

Divisor: The number of people sharing (6 students)

Quotient: The answer (number of pencils per student)

Step 1: Set up the sharing

24 pencils ÷ 6 students = ? pencils per student

Step 2: Distribute equally

Round 1: Each student gets 1 pencil → 6 pencils given out, 18 left
Round 2: Each student gets 1 pencil → 6 more pencils given out, 12 left
Round 3: Each student gets 1 pencil → 6 more pencils given out, 6 left
Round 4: Each student gets 1 pencil → 6 more pencils given out, 0 left

Step 3: Determine the answer

Each student gets 4 pencils.

24 ÷ 6 = 4 pencils per student
Final answer:

Each student gets 4 pencils because 24 shared equally among 6 students gives 4 to each student

Sharing Rule:

• Equal distribution: Each person receives the same amount

• Verification: 4 × 6 = 24 ✓

3 Real World Sharing Activity
Sharing Activity 3
Problem: A family has 35 stickers to share equally among 7 children. How many stickers does each child get?
Sharing Concept:

Equal sharing: Distributing items so that every recipient gets the same amount, with no one getting more or less than anyone else.

Step 1: Analyze the problem

We have 35 stickers and 7 children. We need to find how many stickers each child gets.

Step 2: Apply equal sharing

We distribute stickers so each child gets the same amount:
35 ÷ 7 = 5 stickers per child

Step 3: State the answer

Each child gets 5 stickers.

35 ÷ 7 = 5 stickers per child
Final answer:

Each child gets 5 stickers because 35 shared equally among 7 children gives 5 to each child

Applied Rules:

• Grouping principle: How many groups of 7 can we make from 35?

• Verification: 5 × 7 = 35 ✓

Complete Lesson Plan
Learning Objectives

Students will be able to:

  • Understand the concept of division as sharing equally among people
  • Identify the dividend, divisor, and quotient in sharing problems
  • Apply the sharing method to solve division problems with dividends up to 50
  • Verify their answers using multiplication
  • Explain their reasoning using mathematical vocabulary
Materials Needed
  • Counters or manipulatives (candies, pencils, stickers, etc.)
  • Worksheets with sharing problems
  • Visual aids showing sharing scenarios
  • Whiteboard and markers
  • Anchor chart with sharing vocabulary
Time Allocation

Duration: 45 minutes

  • Opening/Review: 5 minutes
  • Direct Instruction: 10 minutes
  • Guided Practice: 15 minutes
  • Independent Practice: 10 minutes
  • Closing/Assessment: 5 minutes
Differentiation Strategies

For struggling learners: Use smaller numbers and more manipulatives

For advanced learners: Introduce problems with remainders

For English Language Learners: Use visual aids and provide vocabulary support

Assessment Methods

Formative Assessment: Observe students during guided practice, ask clarifying questions, check for understanding

Summative Assessment: Independent practice worksheet with 5 sharing problems

Exit Ticket: Students solve one sharing problem and explain their process in 2-3 sentences

Rubric: Accuracy (40%), Explanation (30%), Verification (30%)

Complete Summary: Division as Sharing
Key Concepts and Definitions:

Division as sharing: The mathematical operation that distributes a total amount equally among a certain number of recipients. It helps us determine how many items each person gets when sharing fairly.

Sharing: Distributing items so that every recipient gets the same amount.

Dividend: The number being divided (the total amount to be shared).

Divisor: The number we divide by (how many people to share with).

Quotient: The result of division (how many each person gets).

Fact Family: A set of related multiplication and division facts that use the same numbers.

Step-by-Step Sharing Method:
  1. Read the problem carefully: Identify what needs to be shared and how many people to share with.
  2. Identify the dividend and divisor: The total amount and the number of recipients.
  3. Distribute equally: Give one item to each person at a time.
  4. Continue distributing: Keep giving items until they're all distributed.
  5. Count per person: See how many each person received.
  6. Write the answer: This count is your quotient.
  7. Verify your answer: Multiply the quotient by the divisor to check if you get the dividend.
Tip 1: Always make sure each person gets the same amount.
Tip 2: Count carefully to make sure sharing is fair.
Tip 3: Use drawings or objects to visualize the sharing.
Tip 4: Always check your answer: quotient × divisor = dividend.
Tip 5: Fair sharing means everyone gets exactly the same amount.
Examples from Simple to Advanced:

Simple Example: 12 ÷ 3 = ?
Share 12 items between 3 people → Each gets 4 items
Answer: 4

Intermediate Example: 20 ÷ 4 = ?
Share 20 items between 4 people → Each gets 5 items
Answer: 5

Advanced Example: 35 ÷ 7 = ?
Share 35 items between 7 people → Each gets 5 items
Answer: 5

Connection to Multiplication: Division is the inverse of multiplication. If 5 × 7 = 35, then 35 ÷ 7 = 5 and 35 ÷ 5 = 7.
Word Problem Strategy: Look for key words like "share," "equally," "between," "each," or "per" to identify sharing problems.
Real-World Applications: Sharing helps solve practical problems like distributing resources, splitting costs, or organizing items fairly.
Important Rules to Remember:

• Fair Sharing: Everyone gets the same amount.

• Verification: Always multiply your answer by the divisor to check your work.

• Zero Property: Any number divided by itself equals 1 (e.g., 8 ÷ 8 = 1).

• One Property: Any number divided by 1 equals itself (e.g., 12 ÷ 1 = 12).

• Division by Zero: Division by zero is undefined (you cannot divide by zero).

Division as Sharing Concepts
Total Items ÷ Number of People = Items Per Person
Basic Sharing Formula
Sharing
15 ÷ 3 = 5
15 shared among 3 = 5 each
Multiplication Check
5 × 3 = 15
Inverse operation
Word Problem
24 items, 6 people
24 ÷ 6 = 4 each
Key Definitions:

Dividend: The number being shared (the total amount)

Divisor: The number of people sharing (number of recipients)

Quotient: The result of sharing (items per person)

Fair Share: Each person receiving the same amount

Sharing Process:
  1. Identify: Find the total items and number of people
  2. Distribute: Give one item to each person at a time
  3. Count: Keep track of how many each person gets
  4. Answer: The count is items per person
  5. Check: Multiply items per person × number of people
Tip 1: Use drawings to visualize the sharing.
Tip 2: Make sure sharing is fair and equal.
Tip 3: Practice with smaller numbers first.
Tip 4: Always verify your answer by multiplication.
Sharing Relationships: Sharing and multiplication are inverse operations that undo each other.
Problem Solving: Identify key words that indicate sharing is needed.
Real-World Connection: Sharing helps solve everyday problems involving fair distribution.
Advanced Sharing and Questions
4 Classroom Sharing Activity
Sharing Activity 4
Problem: There are 48 markers to share equally among 8 students. How many markers does each student get?
Step 1: Identify the components

Total markers = 48, students = 8, so 48 ÷ 8 = ?

Step 2: Distribute equally

Each student gets 6 markers (48 ÷ 8 = 6)

48 ÷ 8 = 6 markers per student
5 Party Planning Activity
Sharing Activity 5
Problem: A party planner has 56 balloons to share equally among 7 tables. How many balloons does each table get?
Step 1: Set up the problem

56 balloons ÷ 7 tables = ? balloons per table

Step 2: Apply equal sharing

56 ÷ 7 = 8 balloons per table

Step 3: Verify the answer

Check: 8 × 7 = 56 ✓

56 ÷ 7 = 8 balloons per table

Questions & Answers

Question: What happens if I can't share everything equally? Like if I have 10 cookies and 3 friends?

Answer: Great question! Sometimes sharing doesn't work out perfectly:

With 10 cookies and 3 friends:

  • Each friend gets 3 cookies (3 × 3 = 9)
  • That uses 9 cookies
  • 1 cookie is left over

This is called having a "remainder." Each friend gets 3 cookies with 1 left over!

Question: How can I help my child understand the concept of sharing in division?

Answer: Here are effective ways to teach sharing:

  • Use real objects: Counters, toys, or snacks to physically share
  • Draw pictures: Sketch circles to represent people and dots for items
  • Create scenarios: "If you have 12 cookies for 4 friends..."
  • Practice regularly: Start with small numbers and build up
  • Emphasize fairness: Everyone must get the same amount

Hands-on activities make the concept tangible and memorable!

Question: How do I know if a sharing problem is fair?

Answer: A sharing problem is fair when:

  • Every person gets the exact same number of items
  • No one gets more or less than anyone else
  • All items are distributed (no remainders, unless specified)

Think of it like cutting a pizza - each slice should be the same size!