H9 'Measuring' -- §2

Last week
- Quantities and units
- Units of length
- Converting units
- Scale
CHAPTER 9:    Measuring
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Slide 1: Tekstslide
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In deze les zitten 15 slides, met interactieve quiz en tekstslides.

time-iconLesduur is: 45 min

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Last week
- Quantities and units
- Units of length
- Converting units
- Scale
CHAPTER 9:    Measuring

Slide 1 - Tekstslide

Today, you will learn ...

... what an area is and what perimeter is.
... different units of area.
... how to convert units of area.
... how to calculate the area of a rectangle.
CHAPTER 9:    Measuring

Slide 2 - Tekstslide

AREA
PERIMETER
8 ha
(=8hm²)
??
2.8km
??

Slide 3 - Tekstslide

The perimeter of a shape is the total length of the edges.


40+22+20+40+31 = 153 cm

Slide 4 - Tekstslide

Area is about how much space is covered.

The area of a shape is how many times the unit of area fits onto it.

Slide 5 - Tekstslide

Units of area

Slide 6 - Tekstslide

Units of area
80 dm² = ... m²
80 dm² = 0.8m²
4.5 m² = ... cm²
4.5 m² = 450 dm²
4.5 m² = 45,000 cm²

Slide 7 - Tekstslide

Area of a rectangle 

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2

Slide 8 - Tekstslide

Area of a rectangle 

a) Calculate the perimeter and the area of a rectangle measuring 7 by 4 cm.

b) Calculate the perimeter and the area of a square with sides measuring 5 m.
timer
5:00
 finished?
> exercises 17c,d, 18

Slide 9 - Tekstslide

a) Calculate the perimeter and the area of a rectangle measuring 7 by 4 cm.
b) Calculate the perimeter and the area of a square with sides measuring 5 m.

Slide 10 - Open vraag

Area of a rectangle 

a) Calculate the perimeter and the area of a rectangle measuring 7 by 4 cm.



b) Calculate the perimeter and the area of a square with sides measuring 5 m.
Perimeter  7+4+7+4= 22 cm
Area    7x4 = 28 cm2
Perimeter  5+5+5+5= 20 m
Area    5x5 = 25 m2

Slide 11 - Tekstslide

Start making exercises 9-22

Slide 12 - Tekstslide

Today, we have learned ...?



Slide 13 - Tekstslide

  • Tomorrow: mandatory!
  • Exercises 9-22
  • Next week (tuesday): QUIZ
  • 9th of June: TEST

Slide 14 - Tekstslide

QUIZ 9.1/9.2
  • Quantity, unit
  • Units of length
  • Converting units of length
  • Scale
  • Perimeter
  • Area
  • Units of area
  • Converting units of area
  • Area of a rectangle

Slide 15 - Tekstslide