The paper reflects on mathematics education courses for K-12 teacher candidates through the lens of asymmetry enhanced by using various digital tools. It demonstrates both explicit and hidden presence ...

Reflective symmetry is when a shape can be folded in half, with either side of the fold being a mirror image of the other. Rotational symmetry is when a shape can be rotated and it still looks the ...

Among cultures and through history, standards of beauty have changed considerably. At certain times, stoutness was a symbol of wealth and influence and thus was considered attractive. At other times, ...