21 st Century Lessons Review Area Lesson Mrs.Thompson 1
Dec 21, 2015
Warm UpOBJECTIVE: SWBAT select the correct dimensions and calculate the area of diagrams and real-world problems.
Agenda
2
2) Find the area of the trapezoid
1) Why is the shape to the right a trapezoid? 5 yds
8 yds
2 yds
6 yds
Formula
It is a quadrilateral with 1 pair of parallel sides.
Mini-Lesson: Identify the base and height
Agenda
4
What is true about the bases and heights of all the shapes we have studied so far?
base
height
base
height
base
height
base
height
Mini-Lesson: Identify the base and height
Agenda
5
Parallelogram
The height is always perpendicular to the base.
base
height
Mini-Lesson: Identify the base and height
Agenda
6
The height is always perpendicular to the base.
Right Trianglebase
height
Mini-Lesson: Identify the base and height
Agenda
7
The height is always perpendicular to the base.
Non-Right Trianglesbase
height
base
height
Mini-Lesson: Identify the base and height
Agenda
8
The height is always perpendicular to the base.
Trapezoids
base 1
height
base 2
base 1
height
base 2
Interleaving Practice
Agenda
9
Then, identify the bases and heights in these next shapes!
Name the formula you would use to calculate the area of each shape.
Practice – Interleaving: My Turn
Agenda
10
1)7 cm
3cm
7 cm
3 cm 2 cm
b = 7 cm
h = 2 cm
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: Your Turn
Agenda
11
2) 6 ft
4 ft
6 ft
4 ft 3 ft
b = 6 ft
h = 3 ft
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: My Turn
Agenda
12
3)
15 m
10 m
15 m
10 m
7 m b = 15 m h = 7 m
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: Your Turn
Agenda
13
4)
9 cm
4 cm
9 cm
4 cm
3 cm b = 9 cm
h = 3 cm
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving
Agenda
14
b = 3 in
5 in
3 in
4 in h = 4 in
5)
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving
Agenda
15
12 in
13 in 5 in
b = 12 in
h = 5 in
6)
Record the base and height needed to find the area.Name the Formula you would use to find the Area
b = 7 mm
Practice – Interleaving: My Turn
Agenda
16
4 mm
7 mm
6 mm
3 mm h = 3 mm
7)
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: Your Turn
Agenda
17
b = 17 yd
13 yd
17 yd
5 yd 4 yd h = 4 yd
8)
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: My Turn
Agenda
18
base 1 = 6 ft
7 ft
6 ft
7 ft 6 ft h = 6 ft
8 ft base 2 = 8 ft9)
Record the base and height needed to find the area.Name the Formula you would use to find the Area
Practice – Interleaving: Your Turn
Agenda
19
base 1 = 100 ft
62 ft
100 ft
62 ft 48 ft h = 48 ft
74 ft base 2 = 74 ft
10)
Record the base and height needed to find the area.Name the Formula you would use to find the Area