'Measuring'

Last week
- Quantities and units
- Units of length
- Converting units
- Scale
Measuring
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Slide 1: Diapositive
WiskundeMiddelbare schoolvwoLeerjaar 1

Cette leçon contient 15 diapositives, avec quiz interactif et diapositives de texte.

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

Slide 1 - Diapositive

We know:

... 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.
Measuring

Slide 2 - Diapositive

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

Slide 3 - Diapositive

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


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

Slide 4 - Diapositive

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 - Diapositive

Units of area

Slide 6 - Diapositive

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 - Diapositive

Area of a rectangle 

1
2

Slide 8 - Diapositive

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 - Diapositive

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 - Question ouverte

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 - Diapositive

Start making exercises 9-22

Slide 12 - Diapositive

Today, we have learned ...?



Slide 13 - Diapositive

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

Slide 14 - Diapositive

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 - Diapositive