L Wright 2006
Today we will be learning to:
solve measurement problems
use words about mass and ways of
measuring weight
measure using non-standard units
compare weights
estimate and measure.
L Wright 2006
Mental Activity
Imagine a spider is on number 4 of a
hundred square.
Which number is below it?
L Wright 2006
1
11
21
31
41
51
61
71
81
91
2
12
22
32
42
52
62
72
82
92
3
13
23
33
43
53
63
73
83
93
4
14
24
34
44
54
64
74
84
94
5
15
25
35
45
55
65
75
85
95
6
16
26
36
46
56
66
76
86
96
L Wright 2006
7
17
27
37
47
57
67
77
87
97
8
18
28
38
48
58
68
78
88
98
9 10
19 20
29 30
39 40
49 50
59 60
69 70
79 80
89 90
99 100
Imagine a spider is on number 19 of a
hundred square.
Which number is below it?
Which number is above it?
L Wright 2006
1
11
21
31
41
51
61
71
81
91
2
12
22
32
42
52
62
72
82
92
3
13
23
33
43
53
63
73
83
93
4
14
24
34
44
54
64
74
84
94
5
15
25
35
45
55
65
75
85
95
6
16
26
36
46
56
66
76
86
96
L Wright 2006
7
17
27
37
47
57
67
77
87
97
8
18
28
38
48
58
68
78
88
98
9 10
19 20
29 30
39 40
49 50
59 60
69 70
79 80
89 90
99 100
Imagine a spider is on number 45 of a
hundred square.
Which number is below it?
Which number is above it?
L Wright 2006
1
11
21
31
41
51
61
71
81
91
2
12
22
32
42
52
62
72
82
92
3
13
23
33
43
53
63
73
83
93
4
14
24
34
44
54
64
74
84
94
5
15
25
35
45
55
65
75
85
95
6
16
26
36
46
56
66
76
86
96
L Wright 2006
7
17
27
37
47
57
67
77
87
97
8
18
28
38
48
58
68
78
88
98
9 10
19 20
29 30
39 40
49 50
59 60
69 70
79 80
89 90
99 100
Imagine a spider is on number 99 of a
hundred square.
Which number is above it?
L Wright 2006
1
11
21
31
41
51
61
71
81
91
2
12
22
32
42
52
62
72
82
92
3
13
23
33
43
53
63
73
83
93
4
14
24
34
44
54
64
74
84
94
5
15
25
35
45
55
65
75
85
95
6
16
26
36
46
56
66
76
86
96
L Wright 2006
7
17
27
37
47
57
67
77
87
97
8
18
28
38
48
58
68
78
88
98
9
19
29
39
49
59
69
79
89
99
10
20
30
40
50
60
70
80
90
100
Imagine a spider is on number 34 of a
hundred square.
Which number is below it?
Which number is above it?
L Wright 2006
1
11
21
31
41
51
61
71
81
91
2
12
22
32
42
52
62
72
82
92
3
13
23
33
43
53
63
73
83
93
4
14
24
34
44
54
64
74
84
94
5
15
25
35
45
55
65
75
85
95
6
16
26
36
46
56
66
76
86
96
L Wright 2006
7
17
27
37
47
57
67
77
87
97
8
18
28
38
48
58
68
78
88
98
9
19
29
39
49
59
69
79
89
99
10
20
30
40
50
60
70
80
90
100
Main Activity
Today we are going to be finding out
about mass
which is how heavy things are.
L Wright 2006
I will show you two parcels.
Which is the heaviest?
How could we find out?
What if the parcels were in a different
room or place?
L Wright 2006
You will now be split into six groups.
Each group will be given a parcel.
How could you find out which is the
heaviest parcel?
L Wright 2006
Each group will be given a balance and
some non-standard units.
Remember to measure using the same
units.
L Wright 2006
Which unit do you need most of?
Why?
Which unit is the best or worst for
measuring with?
Why?
L Wright 2006
Which parcels were the heaviest?
Did you find them all the same?
Each parcel weighed 1kg.
What does this term mean?
Where have you heard the term before?
L Wright 2006
Group Work
Work in the same groups.
Draw a table of classroom objects that are
heavier or lighter than a kilogram.
1kg
lighter
heavier
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Plenary
Look at the sheet showing a range of
different scales.
What step is the scale going up in?
How did you work it out?
What does each division represent?
L Wright 2006
Remember!
Work out what each division stands for.
Use what you know to work out what you
don’t know.
Homework
Find three things at home which weight
more than 1kg and three things which
weigh less than 1kg.
L Wright 2006