Final Cover - For Printing

5. Row Matrix
   A matrix with a single row is said to be a row matrix.

Eg : B = () 1 − 2 − 3

The matrix B has only one row and three columns and hence it is a new matrix of order

1 ×3.

The seating arrangement of students of a particular desk in the class can be treated as

a concrete example for enabling the child to understand the idea.

The upper abacus which contains a single row and 13 or 15 columns, as the case may
be, can be used as a concrete example for teaching the idea of row matrix.

6. Column Matrix
   A matrix with a single column is said to be a column matrix.

Eg : D - ⎟⎟

⎟

⎠

⎞

⎜

⎜

⎜

⎝

⎛

−

7

5

3

Here, the matrix D has 3 rows and only a single column and hence D is a column

matrix of order 3×1.

The child may be asked to explore a particular column of the abacus which contain 4

rows and a single column, thus making a column matrix.

The students standing in a line also becomes a column matrix.

In the expression 1 × 3 matrix, ‘ 1 ’ represents the ‘row’ and ‘ 3 ’ represents the columns.

The child should be oriented that the first number in the order always represents the

row and the second number represents the column.