Mathematics
Space and shape
Educator section
Memorandum
14
(a) 42
(b) 70
(c) 6
(d) 9
(e) 18
(f) 36
(g) 114
(h) 117
(i) 133
(j) 146
(k) 9
(l) 8
(m) 8
(n) 3
(o) 9
Leaner section
Content
Activity: self-assessment [lo 1.8]
12.4 BRAIN-TEASER!
An aeroplane flies for 200 km in the direction of 060 degrees. Then it changes direction and flies another 480 km in the direction of 110˚. Can you draw the aeroplane’s route? (Hint: 1 cm = 100 km. Draw another North line when direction changes. )
13. Time for self-assessment
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YES | NO |
| I know what “Geometry” means. | __ | __ |
| I can explain the following concepts: | ||
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| I know 3 kinds of lines. | __ | __ |
| I know the sizes of the following angles: | ||
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| I can draw angles correctly with a protractor. | __ | __ |
| I can indicate directions in degrees. | __ | __ |
14. Let us see how you do in the following mental test.
a) 6 x 7 = _______________________
b) 14 x 5 = ______________________
c) 54 ÷ 9 = ______________________
d) 63 ÷ 7 = ______________________
e) 26 – 8 = ______________________
f) 43 – 7 = ______________________
g) 123 – 9 = _____________________
h) 132 – 15 = ____________________
i) 114 + 19 = ____________________
j) 13 + 118 + 15 = _______________
k) ¼ of 36 = _____________________
l) ¹/³ of 24 = _____________________
m) ¹/ 8 of 64 = _____________________
n) ¹/ 6 of 18 = _____________________
o) ¹/ 5 of 45 = _____________________
- Complete: I have ......................... answers correct.
Assessment
Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.
Assessment Standard 1.8: We know this when the learner performs mental calculations involving squares of natural numbers to at least 10 2 and cubes of natural numbers to at least 5 3 .