The Exhibits

Chinese Abacus

Round trips through Saxony

Taklamaran

How big is the area of a circle?

Wonderful Soap Films

Cube cut

Conway cube

Toggle lights

Proof without words: Sum of the square numbers

Proof without words: Sum of odd numbers

Proof without words: Sum of the first n numbers

Proof without words: Twelve corners

The theorem of Klarner

Population growth

Factor Clock

Whitney's Music Box

Who can find the fish?

Crack the Code

What fits in the cube

My Birthday in Pi

Our Logo - Beast stool

Musical Dice Game

Sound Gyro

Ornament

Dust circles

SigMath

Tubes for listening

3 times 4

Giant soap skin

The three hares

Polyhedral crown

Domino

Penrose puzzle

Parabola

Duckling

Pantoinversor

Birthday table

New soap skins

Möbius Street

How tall am I?

Tracery

Leonardo Bridge

Kangaroo Puzzle

Turntable

Feeling Shapes

Marble Run

For Big -- For Small

Circle and Ellipse

Galilei's Tank

Puzzle Tables

Body shadow

Cone cuts

Swinging balls

Golden Ratio

Mirror funnel

Foucault's pendulum

Kaleidoscope mirror

Calcetto

Ellipse Mountains

I am a function

Through crawl knot

Flipper

Euler's lines

Crawl-through Stool

Mirage

Sine

Triadic Polyhedron

Snail King

Triadic Triangles

Shortest distances around the globe

Proof Without Words: Rhombus Parquet

What is Pi?

Galileo

Proof without Words: Pythagoras to Lay

Europe

Eternal Calendar

All triangles are the same

Nine

Yamātārājabhānasalagā

Pen

Coriolis Fountain

Maios 7

Wobble Stone

Have the Courage

Seriation

Tower of Ionah

Shadow Dancer

Benford's Law

Galton Board

Presents for a whole year

Smarties

Word Salad

Rotating Mirror

Proof Without Words: The Area of the Circle