O
C
A B
Step 3 : The crease thus formed divides the circle into two halves thus making two
semicircles.
Step 4 : Select any one semicircle and fold the paper twice appropriately so as to
form an angle at the circumference of the circle.
Step 5 : Place any one of the corners of a neatly cut paper on the angle formed at
the circumference, and also help the child to tactually explore that the
angle so formed is a right angle.
Step 6 : Similarly, create any number of angles in the semicircle and observe that
each of the angles is equal to a right angle.
The above mentioned example reveals that how an abstract concept can be presented to
the child with visual impairment in concrete form. Similarly, a number of abstract concepts
can be taught by creative mathematics in the form of paper folding.