Lesson Plan Addition and Subtraction of Fraction

Topics: Elementary arithmetic, Addition, Subtraction Pages: 5 (744 words) Published: October 18, 2010
Lesson 3
Topic: Fractions
Subtopic: Addition and Subtraction of Fractions

A set of paper strips with words written on it
Fish bowl

To guess the word written on the paper strip
To practice patience and understanding to those who can not get the answer correctly

Control of Error

The teacher will introduce the activity and give the instruction on what to do. •She will ask for 5 pairs of volunteers from the class. One volunteer will pick a paper strip from the bowl and the other will guess the word. Then they will exchange places. If they can get the answer correctly, they will receive a prize.

Work by 4’s

A set of fraction paper strips
A box

To add similar and dissimilar fractions
To participate actively in the activity

Control of Error
Key cards
The class will form groups of 4 members.
The group will discuss the steps in adding fractions.
Each member will get 1 paper strip from the box.
They will add the fractions on the paper strips.
Then they will do LAS 1a – 1c.

Learning Activity Sheet 1a
Add the following fractions. Express the sum to lowest term if needed.

3/6 + 2/6
3/13 + 4/13
2/9 + 6/9
4/16 + 12/16
6/17 + 5/17
6/12 + 8/12
5/15 + 7/15
2/7 + 11/7
8/5 + 6/5
4/14 + 6/14

Learning Activity Sheet 1b
Let’s solve this fraction pyramid! Add the shapes that are connected.

Learning Activity Sheet 1c
Solve the following word problems using AGOSA.

1. Sam went to the bookstore to find books on sale. Yesterday, she bought 4/12 dozen of books. Today, she bought 3/6 dozen of books. How many dozens of book did she buy?

2. She wants to preserve her books so she bought plastic wrapper. She already has 28/8 meters. She still needs to buy 26/6 meters. How many meters of plastic wrapper did she need?

3. It takes 3/2 hours to travel by bus from Hagonoy to Manila, another 2/4 hours from Manila to Diliman. How many hours in all is the travel?

4. Josh is painting a wall. He uses 22/10 can of white paint and 26/20 cans of blue paint. How many cans of paint did he use in all?

Work by 2’s

Set of game boards (minuend and subtrahend)
Large buttons

To subtract similar and dissimilar fractions
To show cooperation in group activity

Control of Error
Key Cards

The students will find their partner.
The pair will get 2 sets of game boards and 2 large buttons of different color. •Each of them will play on each game boards by throwing the buttons on the board. They will help each other in subtracting the fractions on where the buttons had landed. •Then they will answer LAS 2a - @c

Learning Activity Sheet 2a
Subtract the given fractions. Simplify the answer if possible.

1.9/12 – 6/12
2.6/8 – 4/8
3.15/25 – 5/25
4.27/45 – 9/45
5.32/56 – 14/56
6.19/20 – 10/20
7.9/15 – 6/15
8.21/28 – 7/28
9.35/42 – 21/42
10.18/27 – 9/27

Learning Activity Sheet 2b
Subtract the following dissimilar fractions. Simplify your answer if possible.

1.7/8 – 3/5
2.¾ - 4/9
3.5/7 – 7/14
4.8/9 – 5/12
5.19/24 – 5/8
6.24/30 – 16/45
7.15/25 – 2/5
8.42/30 – 6/15
9.78/24 – 15/12
10.11/12 – 6/24

Learning Activity Sheet 2c
Solve the following word problems using AGOSA.

1.Tessa spent ¾ of an hour jogging and ¼ of an hour walking. How much more time did she spend jogging than walking? 2.Me-anne bought home 51/4 sacks of rice. She donated 7/4 sacks to the typhoon victims. How many sacks of rice were left with Me-anne? 3.Allysa used 5/8 meter of Japanese paper. She cut it from a 6/5 meter piece. How much Japanese paper was left?

Extension and Variations
SW #3 – Do Exercise 2 and 3 #1 -5 on page 190 of Math book. •HW #3 – Do Challenge on page 191 of Math book....
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