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Subject: Mathematics
Semester: 2
Period: 4
Week: 23
School Name:
Teacher’s Name:
Subject: Mathematics
Grade Level: Grade 3
Date: Week 23
Lesson Duration: 45 minutes
Week & Period: Week 23, Period 4
Topic: Fractions
Sub-topic: Multiplying Fractions by Whole Numbers
Learning Objectives
By the end of the lesson, students should be able to:
Multiply fractions by whole numbers
Solve word problems involving multiplication of fractions
Represent multiplication of fractions with drawings
Previous Knowledge
Students already know how to add, subtract, and convert fractions.
Instructional Materials
Mathematics textbook for Grade 3
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher asks: “If you eat ½ of a cake each day for 3 days, how much cake have you eaten in total?”
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
To multiply a fraction by a whole number, multiply the numerator by the whole number and keep the denominator the same. Example: ⅔ × 4 = (2 × 4) ÷ 3 = 8⁄3 = 2 ⅔. Multiplying fractions by whole numbers can be seen as repeated addition. Example: 3 × ½ = ½ + ½ + ½ = 3⁄2 = 1 ½. Word problems: A recipe needs ⅔ cup of sugar. If you make 2 recipes, you need ⅔ × 2 = 4⁄3 = 1 ⅓ cups.
Learners’ Activities (Expanded):
Students solve multiplication of fractions on the board. They use drawings to show repeated addition. They solve real-life story problems in groups.
Assessment Checks:
Multiply: ¾ × 2.
Solve: 5 × ⅖.
A jug holds ⅔ litres of juice. How much juice is in 3 such jugs?
Notes (Expanded & Detailed):
Multiplying a fraction by a whole number involves multiplying only the numerator. Multiplication of fractions can be explained as repeated addition or with visual models.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Multiply fractions by whole numbers by multiplying numerators. Denominator stays the same. This can be seen as repeated addition.
Evaluation Method (Expanded):
Exit slip/quiz: Multiply ⅚ × 3. Write the answer as a mixed number.
Teacher will collect slips and provide oral feedback.
Assignment (Expanded):
Write and solve 5 word problems involving multiplication of fractions by whole numbers.
Follow-up Activity:
Students use real-life examples like doubling recipes to practice.
Differentiation / Inclusive Strategies
Provide step-by-step support for learners who struggle. Challenge advanced learners with larger denominators and improper fractions.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low