Numbers up to 40

Grade 1 · Mathematics

Semester 1 | Period 2 | Week 9

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Subject: Mathematics

Semester: 1

Period: 2

Week: 9


School Name:
Teacher’s Name:
Subject: Mathematics
Grade Level: Grade 1
Date: Week 9
Lesson Duration: 45 minutes
Week & Period: Week 9, Period 2
Topic: Numbers up to 40
Sub-topic: Comparing and Ordering Numbers up to 40

Learning Objectives
By the end of the lesson, students should be able to:
Compare and order numbers from smallest to largest and vice versa
Use greater than ( > ), less than ( < ), and equal to ( = ) symbols correctly
Compare numbers using sets, number lines, and flashcards

Previous Knowledge
Students already know how to read and write numbers up to 40 and represent them on number lines.

Instructional Materials
Flashcards, number lines, counters, textbook.

Lesson Development – ABC Model

A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher shows two groups of bottle tops (10 and 15) and asks learners: Which is more? Which is less?
Learners give quick responses as warm-up.

B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Teacher explains the symbols:
“>” means greater than.
“<” means less than.
“=” means equal to.

Examples:
15 > 10 (fifteen is greater than ten).
8 < 12 (eight is less than twelve).
20 = 20 (twenty is equal to twenty).

Teacher uses number line to compare:
On the number line, numbers to the right are greater, numbers to the left are smaller.

Teacher shows how to order numbers:
From smallest to largest: 12, 18, 25, 30.
From largest to smallest: 30, 25, 18, 12.

Learners’ Activities (Expanded):
Learners use flashcards to compare numbers in pairs.
Learners practice arranging groups of numbers in ascending and descending order.
Learners use number lines to decide which number is bigger or smaller.

Assessment Checks:
Which is greater: 28 or 32?
Arrange these numbers from smallest to largest: 17, 9, 21, 12.
What symbol fits between 14 and 14?

Notes (Expanded & Detailed):
Comparing helps us know which number is bigger, smaller, or equal.
Symbols (> < =) make it easy to compare quickly.
Ordering numbers shows arrangement in sequence either increasing or decreasing.

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Teacher reviews comparing numbers using symbols, ordering from smallest to largest and vice versa.

Evaluation Method (Expanded):
Exit slip/quiz: Compare 25 and 20 using the correct sign. Arrange these: 30, 11, 19 in ascending order.
Teacher will collect slips and provide oral feedback.

Assignment (Expanded):
Compare and write using > < or =: 18 __ 14, 22 __ 22, 35 __ 30.

Follow-up Activity:
At home, learners compare the number of shoes, cups, or fruits in two groups.

Differentiation / Inclusive Strategies
Weak learners compare small numbers with objects, while strong learners use larger numbers and abstract figures.

Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low