Mathematic topics include a wide variety of areas.

charts & graphs

codes, ciphers & secret messages

fractals (see also 'tessellations')

geometric shapes and figures (see also 'fractals', 'tessellations')

graphs (see 'charts & graphs)

number systems

patterns

Pi

polls and surveys

shapes (see 'geometric shapes and figures')

statistics & probability

surveys (see 'polls and surveys')

tessellations (see also 'fractals')