Length + Perimeter

Length and perimeter
Schedule:
• Learning goals
• New unit
• Vocabulary
• Starter
• Work + explanation
1 / 15
Slide 1: Slide
WiskundeMiddelbare schoolvwoLeerjaar 2

This lesson contains 15 slides, with interactive quizzes and text slides.

Lesson duration is: 60 min

Items in this lesson

Length and perimeter
Schedule:
• Learning goals
• New unit
• Vocabulary
• Starter
• Work + explanation

Slide 1 -Slide

Learning goals
At the end of this lesson I can:
•  Use the correct vocabulary from measuring with length
• Convert length units
• Calculate the perimeter of a closed figure

Slide 2 -Slide

Measurements: Length and area

Slide 3 -Mind map

Length + perimeter
Length is a measure of _______________________
The ___________ (m) is the base unit for length in the metric system

A ______________ is a (2D) shape with at least 3 straight sides
The perimeter of a polygon is the ________________ around its ________________

Complete:
Polygon, metre, boundary, distance
(you will need to use 1 word twice)

Slide 4 -Slide

Length + perimeter
Length is a measure of Distance
The Metre (m) is the base unit for length in the metric system

A Polygon is a (2D) shape with at least 3 straight sides
The perimeter of a polygon is the Distance around its Boundary

Complete:
Polygon, metre, boundary, distance
(you will need to use 1 word twice)

Slide 5 -Slide

How long are 3 laps around a football field approximately?
How long is on edge of a die approximately?
How thick a paperclip approximately?
1 cm
1 km
1 mm

Slide 6 -Drag question

Starter
1. Convert 3020 m in km.

2. Find the sum of 4.5 m and 63 cm
3. Find the perimeter of:
a)

b)

Slide 7 -Slide

Starter
1. Convert 3020 m in km.
3020 m = 3.02 km

2. Find the sum of 4.5 m and 43 cm
4.5 m = 450 cm
450 cm + 43 cm = 493 cm
3. Find the perimeter of:
a)

b)
15
24

Slide 8 -Slide

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 9 -Slide

Length conversion

Slide 10 -Slide

If you want to add lengths together, they MUST be the same unit

To add 5 m and 25 cm:
1. convert the lengths to the same unit
5 m = 500 cm          25 cm = 25 cm
500 cm + 25 cm = 525 cm

Slide 11 -Slide

Perimeter
Perimeter is the distance around a 2D-shape

Slide 12 -Slide

Extra practice + help
p. 248: 12A                3bcf, 7behk, 8ac
p. 250: 12B                1abcd, 2abc, 4a

Slide 13 -Slide

Extra practice
p. 248: 12A                 7cfil, 9, 12, 13
p. 250: 12B                3abc, 5, 7, 9, 10

Slide 14 -Slide

Challenge
p. 248: 12A                 9, 11, 14, 15
p. 250: 12B                 9, 11, 12
ManageBac > Files > Unit 5: Measurements > Perimeter challenge