GeoGebra - Our Learning/Teaching Assistant
1.0 Digits 1-9: Cross Math Puzzles
1.1 More Cross-Math Puzzles
source: https://erich-friedman.github.io/published/cross/index.html
2.0 CAS command : SEQUENCE
2.1 More on SEQUENCE
https://www.geogebra.org/m/ahnxwdv9
2.2 Geoboard Math in the Classroom
a) https://www.geogebra.org/m/mnywych9 (品字形幾何板)[br]b) https://www.geogebra.org/m/ermtteja (Geoboard)
2.3 Alternate Construction Method
2.4 Commands
3.0 Rigid Polygon - 5 Piece Tangram
3.1 Tangram Activities in the Math Classroom
https://www.geogebra.org/m/RZT3dP33 (2 Challenges with Guidance)
4.0 Origami Open Box Investigation
https://www.geogebra.org/m/rspuqcey