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Subject: Mathematics
Semester: 1
Period: 1
Week: 5
School Name:
Teacher’s Name:
Subject: Mathematics
Grade Level: Grade 3
Date: Week 5
Lesson Duration: 45 minutes
Week & Period: Week 5, Period 1
Topic: Sets and Symbols in Context
Sub-topic: Universal Set, Subsets, Using >, <, = in Sets
Learning Objectives
By the end of the lesson, students should be able to:
Identify the universal set and subsets
Use comparison symbols with sets
Relate sets to fractions and numbers
Previous Knowledge
Students already know basic set concepts and comparison symbols.
Instructional Materials
Mathematics textbook, Venn diagrams, flashcards with symbols.
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher shows two sets of classroom objects and asks which has more.
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Teacher defines universal set as the largest set that contains all elements under consideration. Example: U = {1,2,3,4,5,6,7,8,9,10}.
Teacher defines subset as part of the universal set. Example: A = {2,4,6,8}.
Teacher compares sets using >, <, = based on the number of elements. Example: If A = {1,2,3}, B = {4,5}, then A > B because A has 3 elements while B has 2.
Learners’ Activities (Expanded):
Learners draw universal sets and subsets.
Learners compare sets using symbols.
Learners connect set comparison with fraction comparison (½ < ¾).
Assessment Checks:
Is A = {1,2,3} a subset of U = {1,2,3,4,5}? Compare A and B if A = {1,2,3}, B = {4,5}.
Notes (Expanded & Detailed):
Universal set contains everything we are considering. Subsets are smaller sets inside. Comparison symbols can be used to compare the size (cardinality) of sets.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Teacher reviews universal set, subsets, and set comparison with symbols.
Evaluation Method (Expanded):
Exit slip: Draw a universal set of numbers from 1–10 and form two subsets. Compare them using >, <, =.
Assignment (Expanded):
Form sets of animals and compare their sizes with household items.
Follow-up Activity:
At home, learners identify universal sets in daily life (all family members, all books at home).
Differentiation / Inclusive Strategies
Teacher gives extra guidance and uses real-life examples for struggling learners.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low