FINGER AND ARM PROPORTIONS
Finger and arm proportions
Elements of this task can be done discretely, but a holistic approach is
encouraged to draw the outcomes together.
Learners should be encouraged to collect their own data , but should this not
be possible, an exemplar set is included.
Activity 1
Learners collect their own data for either forearm and hand or segments of
their index finger and use this to construct scattergraphs.
Activity 2
This introduces the idea of a line of best fit using the PowerPoint instructions
(see ppt
file).
Relationship between salary and sick leave
Number of days on sick leave
25
Too short! The line must
This line joins the first and last
extend past the first and
points, a common strategy,
last points, so that you can
but there are more points
estimate.
below than above the line, so
it’s not quite accurate.
This line is just about right.
There is no exactly correct
solution, but your line must
go through or be close to as
many points as possible.
20
15
10
5
0
0
5000
10000
15000
20000
25000
30000
35000
Salary (£)
Learners draw a line of best fit on their scattergraph from Activity 1.
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
1
FINGER AND ARM PROPORTIONS
Finger proportions
Name of group
member
2
Length of first
segment of index
finger (tip to first
knuckle)
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
Length of second
segment of index finger
(first knuckle to second
knuckle)
FINGER AND ARM PROPORTIONS
Name of group
member
Length of first
segment of index
finger (tip to first
knuckle)
Length of second
segment of index finger
(first knuckle to second
knuckle)
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
3
FINGER AND ARM PROPORTIONS
Arm proportions
Name of group
member
4
Length of hand
(middle finger tip to
wrist)
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
Length of forearm
(wrist to elbow)
FINGER AND ARM PROPORTIONS
Name of group
member
Length of hand
(middle finger tip to
wrist)
Length of forearm
(wrist to elbow)
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
5
FINGER AND ARM PROPORTIONS
Finger proportions
6
Name of group
member
Length of first segment
of index finger (tip to
first knuckle)
A
2.5
Length of second
segment of index finger
(first knuckle to second
knuckle)
3.2
B
2.5
3
C
2.5
2.8
D
3
3.5
E
2.5
2.5
F
2.5
3
G
2
2.5
H
2
2.5
I
2.5
3
J
4.8
5.5
K
5
5
L
5.5
5.5
M
2.5
3.2
N
2.6
3.2
O
3
3
P
5.2
5.5
Q
2
3
R
2.2
2.3
S
2
2.6
T
2
2.5
U
2.2
2.9
V
2.3
2.8
W
2.3
3.2
X
2.4
3.2
Y
2.6
3.2
Z
2.7
2.9
AA
2.2
3.2
BB
2.2
3
CC
2
2.6
DD
2.4
2.8
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
FINGER AND ARM PROPORTIONS
Arm proportions
A
Length of hand
(middle finger tip to
wrist)
17
B
19
30
C
16
24
D
18
24.5
E
18
23
F
17
22
G
19
26
H
21
30
I
19
28
J
18
27
K
17.5
22
L
17.5
23.5
M
17.4
23.4
N
19.5
30
O
18.2
30
P
17.5
18
Q
19
30
R
18
18.5
S
19.5
23.2
T
17
21
U
17
25
V
17.5
21
W
17.6
25.2
X
18.4
25.1
Y
17
25
Z
19
23.7
AA
16.5
23
BB
17.5
27.6
CC
18
25
DD
17.5
25
Name of group
member
Length of forearm
(wrist to elbow)
20
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
7