,,Math begins with intuition.We take something completly concrete,and then we make it so abstract it might be unrecognizable"

,,Math is pretty hard to talk about,so we`ll go halfway around the world to find somebody to have a conversation with"

,,The idea of abstraction is so natural a mathematician"

2.Origami

Origami is a type of art first originated from Japan.It is possible to fold many beautiful shapes in origami.Most amazingly,many astonishing pieces of origami are produced from a single piece of paper,with no cuttings.

Modular origami

origami tessellation

origami animal

3.Tangram

The tangram is a dissection puzzle consisting of seven flat shapes,called tans,which are put together to from shapes.The objective of the puzzle is to form a specific shape using all seven pieces,which can not overlap.

*Historu of tangram

The origin of the word,,tangram" is unclear.The ,,gram" element is apparently from Greek word.The ,,tan"-element is variously conjectured to be Chinese t`an `to extend ` or Cantones t`ang `Chinese`.

Fibonacci spiral

The Fibonacci spiral is a geometric pattern which includes of a spiral made by linking the corners of neighboring squares such that the latest length of the geometric square is the sum of the previous two.

Geometric man

Inmathematics,the geometric man is a mean or average,which indicatesthe central tendency or typical value of a seat of numbers by using the product of their values(as opposed to the arithmetic mean which uses their sum).