Corinna Beuermann-Kulp
I work at the elementary school in Friedland and create and sew unique
mathematical geometrical toys for children 5 years old and older.
Together with the mathematical institute of the university in
Göttingen, I developed the "Kindergarten Koffer" - a suitcase with
different Puzzles: 8 mathemagic cubes, 1 Pentomino, 1 Sudoko, the
magnetic dodecagon with 60 pieces and the Maths Pie. I made many
spheres with different tilings on the surface, and 18 edge models from
polyhedra. My hobby is sewing stellated polyhedra, quilts and other
robust, elastic, haptic and soft toys/puzzles!
My circular quilt: "Da staunst Du - 29 Bauklötze!" was shown in the
exhibit for mathematical quilts in different locations in Germany
during the year of math in 2008.
One of 18 different modular edge models of polyhedra.
The material is very haptic, sturdy and very well suited for
curious kids, but they should not give this toy to their pet,
because it is filled with rustling styrofoam balls.
On the surface of the polyhedron you can discover triangles,
tetragons, pentagons and hexagons. These can be folded toward the
center or the outside, thereby changing the appearance and the
stability of the polyhedron. The models are also sporty: You can
throw and catch them well. A balloon in the middle will change the
flight trajectory and stability.
Count the polygonal faces, straight edges and vertices to discover
Eulers characteristic and make your math teacher happy! Because
each model is different.
The magnetic dodecagon is very robust and very suitable for
curious children, but they must not swallow the 60 extra strong
magnets.
One basic concept of school geometry is symmetry. On the one hand
there is the property of symmetry of figures and objects, on the
other hand there are symmetry maps (mirroring, rotation), which
produce regularity. This dodecagon consists of 24 small and 24
large diamonds and 12 squares with complementary colors on their
front and back. The edge lengths are all equal, the angles are 30
° / 150 °, 60 ° / 120 °, 90 ° / 90 °. From the 60 pieces you can
produce one large or 4 small dodecagons. There are many possible
arrangements for their colors! Comprehend maths with head, heart
and hand. I like puzzles!