Page 19 - Maths Skill - 6

Patterns in Mathematics 17

SUBJECTIVE TYPE QUESTIONS 2. ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
F. Complete the following Increasing Patterns ^ ^ ^ ^ ^ ^ ^ ^ ^
3. Observe the pattern and fill in the circles.
1. 2 3

1 3 5 2
2 5 ? 5
3 4

Word Stock
Pattern Visualise Consecutive Shapes Polygon.

Activity

Objective: To understand the rules of a magic square of 3 × 3.

Materials Required: A cardboard/chart paper, coloured paper, fevicol, sketch pens and a pair of scissor.
Procedure: 1. Take a chart paper or cardboard of size 12 cm × 12 cm.

2. Paste a coloured paper on the cardboard.
3. Make a 3 × 3 square on it with sketch pen as shown in Figure 1.

4. Choose any multiple of 3 as a constant. Let it be 21.
5. Put the number 21 ÷ 3, i.e., 7 called the central number in the middle cell C (Figure 2).
5
6. Add 1 to the central number and subtract 1 from the central number. Put these numbers
in C and C respectively.
3
7
7. Add 2 to central number and subtract 2 from it. Put these numbers to the right (C ) and
6
left (C ) of the central number.
4
8. Add 3 to the central number and subtract 3 from the central number. Put these numbers
in C and C .
9
1
9. Add 4 to the central number and subtract 4 from the central number. Put these numbers
in C and C respectively.
8
2
10. Your magic square is ready. Verify it (Figure 3).
Observation :
A 3 × 3 square Central number = C 1

C 1 C 2 C 3 10 3 8

C 4 C 5 C 6 5 7 9

C 7 C 8 C 9 6 11 4

Figure 1 Figure 2 Figure 3