Ingwer

교각정 (문경새재 나들이)

광복절 전야제 _국회

ars electronixa play the beat (May 2024)

ars eletronica the AI piano room 2023

swing1

swìng2

rest over the cloud [gmunden]

sleeping flower 02

Rich Story of Shilla tower

sum of n ( 1,2,3,...)

Yes I am moving

sankt gilgen mozart haus mit lake

Wolfgang lake (st Gilgen)

Wolfgangsee in Gilgen

passing over the bridge

sum of squares, Easy way to remember with materials

tablet holder _multi slops

3 pyramids to triangular prism [Volume of cone and prism]

Octagon to square(dissection puzzle) cup board design

3D printing _disks

cube to 3 pyramids.

3 pyramids to Cube (Geogebra, Prusa slicer, printed hinged puzzle)

첨성대 몸통 만들기 (지오지브라와 팅커캐드 활용)

TinkerCad the very basic and introduction.

Volumes of pyramids (Cavalieri's principle)

pyramids net on cube

pyramid filled in octahedron on net(Geogebra)

pyramids filled cube on net [Geogebra]

pyramids filled in tetrahedron (on net) [Geogebra]

dodecahedron filled with pyramids[Geogebra]