12 E + 12 F Area of a triangle and parallelogram

Area of Triangle and Parallelogram
Schedule: 
  • Learning goals 
  • Revision 
  • Area of a triangle
  • Area of a parallelogram 
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Slide 1: Tekstslide
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In deze les zitten 18 slides, met interactieve quizzen en tekstslides.

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Area of Triangle and Parallelogram
Schedule: 
  • Learning goals 
  • Revision 
  • Area of a triangle
  • Area of a parallelogram 

Slide 1 - Tekstslide

Learning goals 
At the end of this lesson I can:
  •  Calculate the area of rectangles
  • Calculate the are of triangles 
  • Calculate the area of parallelogram 

Slide 2 - Tekstslide

Area of a rectangle
What is the formula for the area of a rectangle ?
What kinds of units do we use for area

Slide 3 - Tekstslide

Area of a rectangle
Area of a rectangle = Length · Width 

You express area in squares... cm2  m2  ft2

Slide 4 - Tekstslide

What is the formula for the area of a triangle?

Slide 5 - Open vraag

Area of a triangle
Area of a triangle =
The Base is often the bottom of the shape
The Height is Perpendicular to the Base

21baseheight

Slide 6 - Tekstslide

What is a parallelogram?

Slide 7 - Open vraag

Area of a parallelogram 
Area of a parallelogram = 
How can you find the height in a parallelogram? 
BaseHeight

Slide 8 - Tekstslide

Area of a parallelogram 
Area of a parallelogram = 
How can you find the height in a parallelogram? 
Which other area formula is this very similar to? 
BaseHeight

Slide 9 - Tekstslide

Area of a parallelogram 
Area of a parallelogram = 
 
Area of a rectangle = 
BaseHeight
lengthwidth

Slide 10 - Tekstslide

Practice
Find the area's of the following polygons
A
B
C

Slide 11 - Tekstslide

Practice
Find the area's of the following polygons
A = 20m2
B = 10
C = 2 + 6 = 8

Slide 12 - Tekstslide

What to do

- I really want a challenge                                                  Open the Pink slides on LessonUP

- I understand it, but I think a                                           Open the Blue slides on LessonUp
 bit more practice will help me                 

- I think more practice will help me,                             Work with the board
and would like to do more board work                                                               

Slide 13 - Tekstslide

Extra practice + help
p. 259 : 12E             1abcgh, 3
P. 260: 12F               1abcf, 2               




Slide 14 - Tekstslide

Extra practice
p. 259 : 12E             1defgh, 2, 3
P. 260: 12F               1def, 2, 3, 4              




Slide 15 - Tekstslide

Challenge
p. 259 : 12E             1ghi, 2, 4
P. 260: 12F               1def, 2, 3, 4              

           ManageBac > Files > Unit 5 Measurements > Surface area 1
          ManageBac > Files > Unit 5 Measurements > Surface area 2
          ManageBac > Files > Unit 5 Measurements > Area and surface area composite figures (don't do the last question)



Slide 16 - Tekstslide

Homework
P. 257        12D: 7 
P. 260       12E: 2
P. 261        12F: 4

Slide 17 - Tekstslide

Area and perimeter in the classroom
Go and find different objects in the classroom to measure. 

Calculate the area and perimeter of at least 3 different objects and record this information in your notebook. 

Don't forget your units!!!! 

Slide 18 - Tekstslide