First Term Lesson Note for Week Five
Class : Primary Three
Subject : Mathematics
Topic : Fractions (Meaning, types and examples)
Duration : 80 Minutes
Period : Double Period
Reference Book :
New Method Mathematics for Primary Schools, Book 3.
Lagos State Unified schemes of work for lower Primary, (Primary 1 – 3).
Online Resources
Instructional Material : Chart showing examples of fractions
Learning Objectives : By the end of the lesson learners will be able to :
i. Define Fractions and give examples
ii. Identify types of fractions and explains the difference between like and unlike fractions.
iii. Find fractions of shapes and fractions of whole numbers.
Content :
A fraction is a part of whole number. This part are divided into equal parts. It consist of two number called ‘numerator’ and ‘denominator’.
2 – Numerator
________
3 – Denominator
Examples of fractions are 1/2, 3/5, 4/9, 2/3, 7/10, 14/5, 7/2, etc.
A numerator is the number found at the top of a given fraction. E.g. 1/2, 3/5, 4/9, 7/10.
The numerator of the above fractions are: 1, 3, 4, and 7 respectively. These are the number on top of the fractions.
A denominator is the number found at the bottom of a given fraction. E.g 2/3, 4/5, 5/9, 7/10.
The denominator of the given fractions are : 3, 5, 9, and 10 respectively. These are the numbers at the bottom of the fractions.
Types of Fractions
There are two types of fractions. These are :
Like Fractions : These are fractions that have the same denominators. E.g. 1/3 and 2/3, 2/7 and 4/7, 3/10 and 6/10, etc.
Unlike fractions : These are fractions that have different denominators. E.g. 2/3 and 1/4, 2/5 and 3/7, 3/4 and 5/9, etc.
Fractions of whole numbers
The fractions of whole number can be gotten by grouping the objects according to the number given under the denominator. Then, multiply the result with the numerator.
i. 2/3 of 12 = 2 × 4 = 8
🎈🎈🎈 🎈🎈🎈 🎈🎈🎈 🎈🎈🎈
The fractions of whole number can be gotten by grouping the balloon in 3’s. Then multiply 2 by 4 groups, which is equal to 8 balloons.
ii. 1/4 of 12 = 1 × 3 = 3
🍦🍦🍦🍦 🍦🍦🍦🍦 🍦🍦🍦🍦
The fractions of whole number can be gotten by grouping the ice cream in 4’s. Then multiply 1 by 3 groups, which is equal to 3 ice creams.
Presentation Steps :
Step 1 : Revises the previous lesson with the learners by asking questions.
Step 2 : Introduces the new topic by explaining the meaning of fractions with examples.
Step 3 : Identify the numerator and denominator of given fractions.
Step 4 : Explains the types of fractions ; like and unlike fractions with examples.
Step 5 : Solve fractions of shapes and whole numbers by grouping objects.
Evaluation :
1. Write out the enumerators of these fractions:
i. 2 / 3 = _________
ii. 4 / 5 = _________
iii. 7 / 10 = ________.
iv. 9 / 11 = ________
2. Circle and write out the denominator in the given fractions below:
i. 3 / 4 = ___________
ii. 3 / 8 = ___________
iii. 7 / 10 = __________
iv. 9 / 11 = ___________
3. Solve the given fractions :
i. 3 / 4 of 20 = ___________
ii. 4 / 5 of 10 = ___________
Conclusion : At the end of the lesson learners were able to answer the questions correctly.
Assignment :
Write ‘like fraction’ or ‘unlike fraction’ in front of the pair fractions.
1. 1/3 and 2/3 are ______________________
2. 2/5 and 5/6 are _______________________
3. 4/7 and 2/7 are ______________________
4. 3/10 and 1/4 are ______________________
5. 3/5 and 3/7 are ______________________