教城網誌 EdBlog
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From 2 Sept 2013 the EdBlog of GeoGebra Institute of Hong Kong would not be updated. Please visit our official website https://sites.google.com/site/hkgeogebra/ to access our latest materials.

由2013年9月2日起香港 GeoGebra 學院的教城網誌將會停止更新。請到我們的官方網頁 https://sites.google.com/site/hkgeogebra/ 瀏覽我們的最新資源。

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與學生一起探究由若干個正方形邊對邊拼合而成的 圖形的周界變化,及固定周界的長方形的面積變化。 http://www.geogebratube.org/material/show/id/40416 將下列各個數目的正方形拖拉在一起,把它們邊對邊地併合起來。 在表中列出併合而成的圖形可能出現的周界。 (a) 3 個; (b) 4 個;(c

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By irinaboyadzhiev in GeoGebraTube http://www.geogebratube.org/material/show/id/37497    

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Workshop for Secondary Math (18 Apr 2013) Workshop for Primary Math  (19 Apr 2013)

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  Exercise 1 http://www.geogebratube.org/material/show/id/34862 Exercise 2 http://www.geogebratube.org/material/show/id/35023 Exercise 3 http://www.geogebratube.org/material/show/id/35383 Exercise 4 http://www.geogebratube.org/material/show/id/35384 Exerc

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A coin is rolling around another fixed identical coin without slipping.  If the coin starts with the head up, is the coin turned upside down when it is directly opposite to its starting position? http://www.geogebratube.org/material/show/id/33699   

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http://www.geogebratube.org/material/show/id/33233    

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Apply percentage changes to solve simple selling problems. 運用百分數變化解答簡單的買賣問題。 Eng. ver.: http://www.geogebratube.org/material/show/id/33333 中文版:http://www.geogebratube.org/material/show/id/32888   

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http://www.geogebratube.org/material/show/id/25639    

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Explore the slope-intercept form of equations of straight lines. http://www.geogebratube.org/material/show/id/27527  

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Explore with students the variety of the perimeters of a figure formed by several congruent squares touching side by side, and the variety of the areas of a rectangle with a fixed perimeter. http://www.geogebratube.org/material/show/id/22723 Drag each of the following numbers of squares toge

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中文版:http://www.geogebratube.org/material/show/id/32323 English version: http://www.geogebratube.org/material/show/id/31313  

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http://www.geogebratube.org/material/show/id/24705 For free drawing.  

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http://www.geogebratube.org/material/show/id/27562    

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http://www.geogebratube.org/material/show/id/27052      

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http://www.geogebratube.org/material/show/id/31684      

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http://www.geogebratube.org/material/show/id/28983      

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http://www.geogebratube.org/material/show/id/30001    

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Handout and Workshop Files

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Handout and Workshop Files

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New features of GeoGebra for teaching mathematics  

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http://www.geogebratube.org/material/show/id/19546      

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http://www.geogebratube.org/material/show/id/18966      

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Launching Seminar of GeoGebra Institute of Hong Kong: Applying GeoGebra in the Learning and Teaching of Mathematics Date: 9 Nov 2012 (Fri) Venue: Lecture Theatre, 1/F, HKPC Building, 78 Tat Chee Avenue, Kowloon Tong, Kowloon.   2:00 pm – 2:05 pm Registratio

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http://www.geogebratube.org/material/show/id/8840  

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  http://www.geogebratube.org/material/show/id/17907    

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http://www.geogebratube.org/material/show/id/17446    

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http://www.geogebratube.org/material/show/id/13674 http://www.geogebratube.org/material/show/id/13675  

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http://www.geogebratube.org/material/show/id/14029  

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http://www.geogebratube.org/material/show/id/15203  

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http://www.geogebratube.org/material/show/id/14026    

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http://www.geogebratube.org/material/show/id/17437 Proof without Word  

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http://www.geogebratube.org/material/show/id/13834    

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http://www.geogebratube.org/material/show/id/13692    

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http://www.geogebratube.org/material/show/id/13662 Worksheets can be downloaded at https://www.dropbox.com/s/flu1zuagin6k1xr/directed_num1_11-12.doc  http://www.geogebratube.org/material/show/id/13663 Worksheets can be downloaded at https://www.dropbox.com/s/p4eva4bpjd1vjcs/directe

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Using GeoGebra 4 in Learning and Teaching of Mathematics PowerPoint: Introduction to GeoGebra Handout and Files of Hands-on Workshop (Task 1 - 10: Simple drawing tasks to produce nice figures with GeoGebra.)

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http://www.geogebratube.org/material/show/id/20507 A GeoGebra 4.2 version of Daniel’s Mentrard same applet in GeoGebra 4 which runs much faster. Enter a function in the input box to see its solid of revolution. See other applets of Daniel Mentrard at http://dmentrard.free.fr/GEOGEBRA/index.

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相關工作紙及教育局「網上學與教支援」資源(中文版)  中文版:http://www.geogebratube.org/material/show/id/1175 Eng ver:   http://www.geogebratube.org/material/show/id/1145   

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利用直尺和對摺或旋轉圖形,探究各類四邊形的特性。 相關工作紙及教育局「網上學與教支援」資源(中文版) http://www.geogebratube.org/material/show/id/18992 正方形和長方形有甚麼特性? http://www.geogebratube.org/material/show/id/18975 菱形有甚麼特性? http://www.geogebratube.org/material/show/id/1

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相關工作紙及教育局「網上學與教支援」資源(中文版) http://www.geogebratube.org/material/show/id/19191 用顏色把四邊形 A 至 T 分類。(先點擊右邊的圖形,再點擊 A 至 T 的同類圖形。)可拖拉及施轉直尺(紅點)量度邊長及直角。 http://www.geogebratube.org/material/show/id/19190 Classify quadrilat

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Investigate locus of orthocentre when one vertex moves on a fixed circle. http://www.geogebratube.org/material/show/id/19143 Given a circle and a chord. Construct a circle tangent to both the given circle and the chord. http://www.geogebratube.org/material/show/id/1914    

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By Alex Chik in GeoGebraTube. Triangle Number: http://www.geogebratube.org/material/show/id/18784 Sum of the First n Odd Numbers: http://www.geogebratube.org/material/show/id/18791  

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Visualize the fraction multiples of a number and demonstrate a/b × c/d = (ac)/(bd) http://www.geogebratube.org/material/show/id/18168  In each of the following questions, drag the red and blue points on the sliders to express the required weight by the shaded area in the ap

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香港數學教育學會和香港 GeoGebra學院聯合舉辦。 日期 : 2012年 10月 13 日(星期六)                時間 : 2:00 p.m. – 5:00 p.m. 地點 : 九龍塘沙福道 19 號      教育局九龍塘教育服務中心 E418室 講者 : 潘維凱老師(聖

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Proof without words shared by alexchik. http://www.geogebratube.org/material/show/id/17333 Modified slightly. http://www.geogebratube.org/material/show/id/17379      

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Factorize the randomly-given quadratic polynomials in the form of ax²+bx+c. 因式分解一元二次多項式ax²+bx+c。 For level 1, a=1; for level 2, a=1,2,3,5,7; for level 3, a=1,2,3,..,12. 程度1,a=1;程度2,a=1,2,3,5,7;程度3,a=1,2,3,..,12。 http://www.geogebratube.org/material/show/id/1

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http://www.geogebratube.org/material/show/id/16800  http://www.geogebratube.org/material/show/id/16801 http://www.geogebratube.org/material/show/id/16802 http://www.geogebratube.org/material/show/id/16803 http://www.geogebratube.org/material/show/id/16804 http://www.geogebratu

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利用1 cm² 的正方形鋪滿不同大小的長方形和正方形,探討長方形 和正方形的面積和邊長的關係。 Explore the formula for the area of a rectangle by tessellating its space using unit squares. Chi ver:  http://www.geogebratube.org/material/show/id/16657 Eng ver: http://www.ge

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The first applet shows how a rectangle could be dissected into a square. http://www.geogebratube.org/material/show/id/14308 Explore with the second applet how this could be done. http://www.geogebratube.org/material/show/id/15775

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Students may learn the formula for finding the area of a trapezium. This applet demonstrate that the simple area formula can be applied to solve this not so simple problem. http://www.geogebratube.org/material/show/id/15772 It is possible to divide the area of a trapezium into two equal halv

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