LESSON
Use a ruler or a metre stick. Estimate.
6.
5
6
Find an object that is
longer than 20 cm
a)
shorter than 10 cm
b)
longer than 1 m
c)
Measure each object you found.
Record the name of each object and its length.
Find the perimeter of each object.
7 .
8
9
the cover of your math book
a)
the longest tabletop in the classroom
b)
Joe measured his garden and found its perimeter is 2000 cm.
8.
8
What is another way of describing the perimeter
of Joe’s garden?
Use 1-cm grid paper.
9.
10
Draw as many shapes as you can with perimeter 16 cm.
Which unit would you use to measure
10.
11
12
each mass?
a bag of oranges
a)
a marble
b)
✓
a desk
c)
use non-standard and
a colour marker
d)
standard units to measure
the passage of time
Estimate the mass of each object.
✓
11.
use a calendar
a)
b)
✓
measure length, width, and
height in centimetres and
in metres
✓
measure perimeter in
c)
d)
centimetres and in metres
✓
measure the mass of an
object in grams and in
kilograms
175
Unit 4