Worksheets and other support in EDB Web-based Learning and Teaching Support
What is the area of the shaded square? What do you discover?
http://www.geogebratube.org/material/show/id/503 (Download GeoGebra file)
著色正方形的面積是多少?你有甚麼發現?
http://www.geogebratube.org/material/show/id/574 (Download GeoGebra file)