:Subtraction Facts
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Approach:Station Level: Year 4 and year 8
80KB
Focus: Knowledge of subtraction facts.     
Resources: Laptop computer with video recording showing and saying each of the 30 items. Answers were recorded on paper. Movie Icon Movie/Zipped: 11.6MB


Questions / instructions:

This activity uses the computer. Click the Play button and watch the video that plays.

16 – 8 =
11 – 4 =
10 – 8 =
14 – 5 =
7 – 1 =
13 – 6 =
2 – 1 =
11 – 2 =
1 – 1 =
10 – 5 =
12 – 6 =
15 – 6 =
7 – 3 =
8 – 1 =
4 – 4 =
9 – 5 =
6 – 5 =
11 – 8 =
9 – 4 =
9 – 2 =
9 – 8 =
5 – 2 =
15 – 8 =
8 – 2 =
3 – 2 =
5 – 0 =
10 – 6 =
18 – 9 =
11– 3 =
10 – 1 =

% responses
2001 ('97)
y4
y8
Total score:
30
27 (19)
65 (51)
27–29
26 (28)
30 (36)
24–26
13 (13)
2 (6)
21–23
9 (9)
1 (3)
18–20
10 (9)
1 (2)
15–17
5 (7)
0 (1)
12–14
3 (5)
1 (1)
9–11
3 (5)
0 (0)
6–8
1 (2)
0 (0)
3–5
1 (1)
0 (0)
0–2
2 (2)
0 (0)
Commentary:
Year 8 students showed very good knowledge of subtraction facts, with 95 percent of the students getting at least 90% of the questions right. Just over half of the year 4 students showed similar levels of knowledge. For both year 4 and year 8 students there was a small improvement between 1997 and 2001.
 
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