Length and height

LESSON PLAN: Length and Height (Grade 1)
Subject: Mathematics
Topic: Length and Height
Class: Grade –  one

Learning Objectives
By the end of the lesson, pupils should be able to:
Understand the meaning of length and height
Compare objects using words like longer, shorter, taller, and shorter
Arrange objects from shortest to tallest or longest to shortest
Measure simple objects using non-standard units (e.g., pencils, blocks, hand spans)
 

Instructional Materials
Pencils, books, rulers (optional)
Blocks or bottle tops
Strings or strips of paper (different lengths)
Classroom objects (chair, table, broom, etc.)
 

 Introduction 
Ask pupils:
“Which is taller: a tree or a chair?”
“Which is longer: a rope or a pencil?”
Show two objects and let pupils compare them.
Introduce the words: length (how long something is) and height (how tall something is)
 

Lesson Development
Step 1: Explaining Length
Show two objects (e.g., pencil and ruler)
Explain: Length means how long something is from end to end
Use words: long, longer, short, shorter
 

Activity:
Pupils compare two objects on their desks
Say which is longer or shorter
Step 2: Explaining Height
Show tall and short objects (e.g., table vs chair)
Explain: Height means how tall something is from bottom to top
Use words: tall, taller, short, shorter

Class Activities
Arrange objects from shortest to tallest
Draw two objects and label them “long” or “short” 

Evaluation 
Ask pupils:
What is length?
What is height?
Which is longer: a pencil or a table?
Which is taller: a chair or a door?
 

Conclusion
Summarize:
Length = how long something is
Height = how tall something is
Praise pupils for participation
 

 Homework
Draw 3 objects at home 
One long object
One short object
One tall object