MATHEMATICS

Mathematics in the world around us

EDUCATOR SECTION

Memorandum

Critical and developmental outcomes:

The learners must be able to:

1. identify and solve problems and make decisions using critical and creative thinking;

2. work effectively with others as members of a team, group, organisation and community;

3. organise and manage themselves and their activities responsibly and effectively;

4. collect, analyse, organise and critically evaluate information;

5. communicate effectively using visual, symbolic and/or language skills in various modes;

6. use science and technology effectively and critically, showing responsibility towards the environment and the health of others;

6. demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation;

7. reflect on and explore a variety of strategies to learn more effectively;

8. participate as responsible citizens in the life of local, national, and global communities;

9. be culturally and aesthetically sensitive across a range of social contexts;

10. explore education and career opportunities; and

develop entrepreneurial opportunities.

LEANER SECTION

Content

ACTIVITY: All about ten [LO 1.3, LO 1.8.1, LO 1.9.1]

• Sort the numbers and encircle those that add up to 10.

Figure 1

• Write the numbers in the circles above as number sentences, e.g.

eg. 5 + 3 + 1 + 1 = 10

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Table 1

LO 1.9.1

• Join the numbers to add up to 10.
• Join another number to make 11, e.g. 6 4 1 .
• You may use the numbers more than once.

Figure 2

• Write the number sentences.

8 + 2 + 1 = 11

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Table 2

LO 1.9.1

• 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 are all multiples of 10.

Figure 3

• Kan jy aan ‘n ander manier dink om 47 + 7 uit te werk? Wys hoe jy dit doen.

Table 3

LO 1.8.1

• Read the story sums.
• Work out the answers.

1. Dad travelled 10 km to work on Monday. On Tuesday he went to work again and then travelled 6 more kilometres to the shop. Altogether he travelled:

10 + 10 + 6 = ____________________________________________

2. Dad does not work weekends. How far does he travel to work during the week from Monday to Friday?

________ + ________ + ________ + ________ + ________ = ________

3. During the weekend, Dad travelled 100 km. How much further did he travel during the weekend than during the week?________ = ________

4. Dad takes 12 minutes to travel to work. The bus takes twice as long. How long does the bus take?________ = ________

Table 4

LO 1.8.1

• Complete the columns.

Table 5

30 + 6	36	thirty six
	28
40 + 9
	63
		eighty one
	44
70 + 7
		twenty three
	89
50 + 5
	40
		ninety nine

Table 6

LO 1.3

LO 1.8.1

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 1.3: We know this when the learner knows and reads number symbols from 1 to at least 200 and writes number names from 1 to at least 100;

Assessment Standard 1.8: We know this when the learner can perform calculations, using appropriate symbols, to solve problems involving;

1.8.1 addition and subtraction of whole numbers with at least 2 digits;

Assessment Standard 1.9: We know this when the learner performs mental calculations involving:

1.9.1 addition and subtraction for numbers to at least 20.