Google Classroom
GeoGebraGeoGebra Classroom

Polygon formed from 2 rectangles

classroom snapshot, 22Feb2023 (team-teach with 智仁)

sample worksheets, lkkb22Feb2023

discussions on worksheet design

discussions on worksheet design
How to provide effective guidance for our students?

second trial on 03Mar2023 (team-teach with 喬欣)

sample worksheet, stts依靈03Mar2023

sample worksheet, stts岷澄03Mar2023

alternate approaches

alternate approaches
1. What are your opinions? 2. What happens when we apply these methods to question 5 and question 9?

a discussion on question 11

a discussion on question 11
Optical Illusion https://www.ggbm.at/cfhbyudd Math is Fun https://www.mathsisfun.com/right_angle_triangle.html

visualization

proof

proof
Pythagoras' Theorem https://www.ggbm.at/adgkwqyn

former trial teaching

1. 香港嘉諾撒學校 https://www.ggbm.at/FeAxv9a4 https://www.ggbm.at/ANmJwgUf 2. Zino Ng - Paper Strips Activities https://www.ggbm.at/NEPFdqgN

references

1. GeoGebra book 圖形。周界 https://www.ggbm.at/vezb2cv4 2. 滕衍文(2013)《小能人數學 小學三年級》頁112-117 南京大學出版社 3. 洪進華(2019)《小學數學新思維 4下A》頁31-64 教育出版社