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Subject: Mathematics
Semester: 2
Period: 6
Week: 33
School Name:
Teacher’s Name:
Subject: Mathematics
Grade Level: Grade 2
Date: Week 33
Lesson Duration: 45 minutes
Week & Period: Week 33, Period 6
Topic: Geometry
Sub-topic: Properties of Triangles and Rectangles
Learning Objectives
By the end of the lesson, students should be able to:
Identify triangles and rectangles
State the properties of triangles and rectangles
Give real-life examples of these shapes
Previous Knowledge
Students already know how to identify simple shapes like circles and squares.
Instructional Materials
Mathematics textbook for Grade 2
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher shows students cut-outs of different shapes and asks: “Which one is a triangle? Which one is a rectangle?”
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Definition of a triangle: A triangle is a shape with 3 sides and 3 corners (vertices).
Definition of a rectangle: A rectangle is a shape with 4 sides and 4 corners. Opposite sides are equal and parallel.
Examples: A roof (triangle), a book cover (rectangle).
Teacher compares triangles and rectangles with real-life objects.
Teacher explains that triangles can be of different types (but focus is on number of sides and corners for this grade).
Learners’ Activities (Expanded):
Students cut paper into triangles and rectangles
Students count sides and corners of each shape
Students play a game “Name That Shape” where teacher shows a figure and learners shout the name
Assessment Checks:
How many sides and corners does a triangle have?
How many sides and corners does a rectangle have?
Give one example of a triangle and a rectangle in real life.
Notes (Expanded & Detailed):
Triangles always have three sides and three corners. Rectangles always have four sides, four corners, and opposite sides equal. These properties help us recognize shapes around us in buildings, books, furniture, and signs.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Teacher revises the properties of triangles and rectangles. Students give examples of objects around them.
Evaluation Method (Expanded):
Exit slip/quiz: Draw one triangle and one rectangle. Write the number of sides and corners for each.
Assignment (Expanded):
Draw two triangles and two rectangles at home and label their sides.
Follow-up Activity:
In the next lesson, students will study circles and circular shapes.
Differentiation / Inclusive Strategies
Teacher gives simplified cut-outs for weak learners. Advanced learners are asked to classify triangles by size (big/small).
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low