Page 30 - IPMaths_leaflet

a
M
h
t
oo
s B
•
k
s 5
a
p
e
g
S
•
mple
a
t
S
t
uden
Student's Book • Maths 5 • Sample page
'
an introductory question to engage
students in the lesson and trigger
whole-class discussion
high-quality illustrations 3.8 Calculate area 3.8
to introduce the topic,
capture students’ interest Activities
and motivate mathematical
s d
s d
s d
s d
e
e
s d
s d
s d
s d
e
e
e
e
o
o
o
o
o
o
o
e
e
o
a
a
a
r
r
r
a
a
u
a
a
a
e
e
e
e
e
e
r
r
r
e
r
r
e
o
ec
ec
o
o
o
ec
ec
ec
ec
ec
ec
nd
nd
nd
nd
nd
nd
o
o
o
nd
nd
o
h
s t
s t
h
h
h
s t
s t
s t
s t
s t
s t
e s
e s
e s
e s
e s
e s
h
h
h
e s
e s
h
n
n
n
o
o
a
o
o
n
n
y s
n
o
n
n
w m
w m
w m
w m
w m
w m
w m
w m
a
a
a
a
a
a
a
u
u
q
u
q
q
q
u
u
u
q
u
H H H H H H H H
y s
y s
y s
y s
y s
y s
y s
o
q
q
q
o
o
investigation How many squares does the second 1. Calculate the areas. Then complete the sentences.
o
w
w
t
?
?
t
r r rectangle have in each row? 1 cm
ec
ec
e ha
c
c
l
l
e ha
n ea
n ea
e i
v
v
e i
ng
ng
a
a
h r
o
h r
1 cm
Alex made two
rectangles with
in some lessons, a small the same area,
text is included in order to one with 3 rows A B C
support the information of 8 squares
portrayed in the pictures and another area of A: area of B: area of C:
with double the
number of rows.
a. Rectangle ____ has the smallest area.
b. Rectangle ____ can have the same area as a rectangle with 8 rows of squares.
c. Rectangle ____ can have the same area as a rectangle with 10 rows of squares.
Each square has
2. Answer the questions. a side of 1 cm!
L o ok ! a. What is the area of 5 squares? ________
Look!
The area of a square with a side of 1 cm is 1 square centimetre. 1 cm b. What is the area of a rectangle with 7 rows of 6 squares? ________
The square centimetre (cm ) is a unit to measure area. c. How many rows of 3 squares does a rectangle with
2
1 cm
2
an area of 15 cm have? ________
We can multiply the number of columns by the number of rows to find the area of a
rectangle. d. How many columns of 6 squares does a rectangle with
2
3 rows of 8 squares 6 rows of 4 squares an area of 42 cm have? ________
3. What rectangles have an 4. Find the area on a grid of coordinates!
3 rows area of 40 cm ? Complete
2
the table with the number of (1,2) (1,6) (5,6) (5,2)
6 rows rows and columns. 6
5
8 columns Rows Columns 4
3
8 × 3 = 4 × 6 = 24 cm
2
2
Both rectangles have an area of 24 cm . 1
2
4 columns
0 1 2 3 4 5 6 7
22 23
22
Maths5_SB_M3.indd 22 1 /9/2020 11: : 1 πµMaths5_SB_M3.indd 23 1 /9/2020 11: : 2 πµ
the main mathematical concepts presented
using pictorial representations and
age-appropriate vocabulary
30
Leaflet_Maths_2018.indd 30 17/9/2020 12:19:38 µµ