Lesson Plan PBI │ Rectangle and Square 1 LESSON PLAN “Rectangle and Square” By : Riza Fadila 12030174235 International Program of Mathematics Education DEPARTMENT OF MATHEMATICS FACULTY OF MATHEMATICS AND NATURAL SCIENCES STATE UNIVERSITY OF SURABAYA 2015
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Lesson Plan PBI │ Rectangle and Square 1
LESSON PLAN
“Rectangle and Square”
By :
Riza Fadila
12030174235
International Program of Mathematics Education
DEPARTMENT OF MATHEMATICS
FACULTY OF MATHEMATICS AND NATURAL SCIENCES
STATE UNIVERSITY OF SURABAYA
2015
Lesson Plan PBI │ Rectangle and Square 2
LESSON PLAN
School Unit : Junior High School Subject : Mathematics Grade/ Semester : VII (Seventh)/ Even Topic : Rectangle and Square Time Allocation : 2 × 40 minutes
A. Main Competences :
1. Appreciate and practice their religion.
2. Appreciate and practice the honest behavior, discipline, responsibility, caring
(mutual assistance, cooperation, tolerance, peace), polite, responsive and
pro-active and show the attitude as part of the solution to various problems
in interacting effectively with the social and natural environment as well as in
the position ourselves as a reflection of the nation in the association world.
Father wants to set the tiles in a living room. The living room is rectangular shaped with
a size of . Whereas, the tiles will be purchased is square shaped with various
types:
Type Tile Size The Number of
Tiles Each Box
Price of
Each Box
A 25 Rp39.500,00
B 8 Rp61.000,00
C 4 Rp71.500,00
Father only have Rp1.500.000,00 and he want the tile size is large enough. If father
considering the price then consider the size of the tiles
What type of tile and how many boxes of tiles should father buy? Explain your
reason!
What is your conclusion about that problem related to area of rectangle and
square?
Solution:
Area of living room = length × width = 6 m × 4 m = 600 cm × 400 cm = 240000 cm2
Area of type A = length × width = 20 cm × 20 cm = 400 cm2
Area of type B = length × width = 40 cm × 40 cm = 1600 cm2
Area of type C = length × width = 50 cm × 50 cm = 2500 cm2
es
Lesson Plan PBI │ Rectangle and Square 11
The price of type A = 24 × 39.500 = Rp948.000,00
The price of type B = 19 × 61.000 = Rp1.159.000,00
The price of type C = 24 × 71.500 = Rp1.716.000,00
Father should buy the tiles type B, because the price of this type is less than
Rp1.500.000,00 and type B is bigger than type A. Father buy 19 boxes of the type B.
The conclusion is:
The formula of Area of square =
The formula of Area of rectangle =
Lesson Plan PBI │ Rectangle and Square 12
QUIZ “Rectangle and Square”
Name : .......................................................
Class/ Students ID : .......................................................
Date : .......................................................
Hint :
1. Solve the problems below correctly
2. Write down the solution in the solution box
3. Do it by your self and don’t cheating with your friends
4. You have 30 minutes to do this quiz
1. Via wants to celebrate the birthday of 13 years. He prepared everything necessary
for her birthday party, including decorating the walls in the living room and a terrace
house with lace. Via’s living room square-shaped with a length of 7 meters, while the
house terrace rectangular-shaped with a length of 10 and width of 7 meters. What is
the lace is needed to decorate Via’s house?
2. Father buys the land in Surabaya. The land square-shaped with a length 9 m. If father
buy that land with the price Rp137.700.000. What is the price of that land per m2?
Solution:
Lesson Plan PBI │ Rectangle and Square 13
3. If perimeter of a rectangle given 60 cm. Determine the length and width are
possible! (min. 3)
4. Determine the length and width of rectangle are possible if the area less than 120
cm2 and greater than 70 cm2! (min. 3)
Solution:
Solution:
Solution:
Lesson Plan PBI │ Rectangle and Square 14
QUIZ ALTERNATIVE SOLUTION “Rectangle and Square”
Name : .......................................................
Class/ Students ID : .......................................................
Date : .......................................................
Hint :
1. Solve the problems below correctly
2. Write down the solution in the solution box
3. Do it by your self and don’t cheating with your friends
4. You have 20 minutes to do this quiz
1. Via wants to celebrate the birthday of 13 years. She prepared everything necessary
for her birthday party, including decorating the walls in the living room and a terrace
house with lace. Via’s living room square-shaped with a length of 7 meters, while the
house terrace rectangular- shaped with a length of 10 and width of 7 meters. What is
the lace is needed to decorate Via’s house?
2. Father buys the land in Surabaya. The land square-shaped with a length 9 m. If father
buy that land with the price Rp137.700.000,00. What is the price of that land per
m2?
Solution: Given: Side of living room = 7 meters Length of terrace = 10 meters Width of terrace = 7 meters Perimeter of Living Room = Perimeter of square = = = Perimeter of terrace = Perimeter of square = = = = Perimeter of living room + perimeter of terrace = = The number of lace that needed is 62 meters
Lesson Plan PBI │ Rectangle and Square 15
3. If perimeter of a rectangle given 60 cm. Determine the length and width are
possible!
4. Determine the length and width of rectangle are possible if the area less than 120
cm2 and greater than 70 cm2!
Solution: Given : Length of the land = 9 meters Price of the land = Rp137.700.000,00 Asked : Price of the land per m2 ?
Solution: Area of land = Area of square = = =
Price of land per =
=
The price of the land per m2 is
Solution: Given : Perimeter of rectangle = 60 cm Asked : Length and width are possible? Solution:
Perimeter of rectangle = 60 = 30 =
First possible : Length = 12 cm and width = 18 cm Second possible : Length = 20 cm and width = 10 cm Third possible : Length = 16 cm and width = 14 cm ...
Solution: Given : area less than 120 cm2 and greater than 70 cm2 Asked : length and width are possible Solution:
First possible : Length = 10 cm and width = 11 cm Area = Second possible : Length = 11 cm and width = 9 cm Area = ...