MATRICES
- Matrix
A matrix is an arrangement of numbers in rows and columns. In a matrix the numbers
arranged horizontally constitute the rows and the numbers arranged vertically constitute
the columns.
Eg. : A = ⎟⎟⎟
⎠
⎞
⎜
⎜
⎜
⎝
⎛
−
−
−
7 8 9
4 5 6
1 2 3
The concept of matrices could be taught to the child by either using the abacus or
through situational approach, taking into account the seating arrangement of the
students in the class. The beads of the lower abacus form a matrix with 4 rows and
either 13 or 15 columns. The seating position of the students in the class if arranged
in an uniform pattern as rows and columns can be cited as a concrete example for a
matrix.Note that fractions and other operations in algebra may be presented either in the
linear way or in the spatial way, but the matrix concept can only be presented in the
spatial way and therefore, use of a magnetic or a Flannel Board may be necessary. The
Braille numbers may be placed on the board in the spatial manner for the child to
explore. The brackets of the matrices may also be shown on the board so that the
child gets an idea of how the matrix is presented in the visual form.Note : General form of a matrix.