21 st century lessons

21st Century Lessons

Review Area Lesson

Mrs.Thompson

1

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

Interleaving Practice

Agenda

20

Now that you have all of the information you need,Calculate the Areas!