There is a very famous example of symmetry in nature - the butterfly ... This kind of symmetry is called rotational symmetry. Rotational symmetry is where a shape or pattern can be rotated ...

Hannah and Maya arrive at Backwell Lake to meet Angela, who sets them a challenge to help discover the symmetry of the natural ... And it's so good to be in all this nature because it's so good ...

In particular, he developed algebraic tools to solve tough problems such as differential equations, and he greatly extended the scope of the mathematical theory of symmetry known as representation ...