Javasketchpad

Please send comments to Mr. W.K. Cheng.


Javasketchpad is a very useful tool for both teaching and learning. Diagrams drawn by the dynamic geometry software Sketchpad can be converted to Javasketchpad diagrams. Teachers and students can work with these diagrams without the software Sketchpad. The only thing needed is a Java-capable browser.

The following are diagrams specially designed for Mathematics teaching and learning in secondary schools. The first time you load any one page will take you about one to two minutes, but then it will take only you less than 30 seconds to load another page. Be patient!


If you would like to download any file from this page, please feel free to do so, but note the following points.

1. You should use the files for non-commerical purpose only.

2. Please send me an email for doing so.

3. You can modify the contents inside or add Chinese, and then use them for off-line browsing. However, please don't post it in the internet as your own web pages.


Form 1 Mathematics :
Constructing the angle bisector of an angle

Form 1 Mathematics : Constructing the perpendicular bisector of a line segment

Form 1 Mathematics : Constructing an angle of 60 degrees

Form 1 Mathematics : Centres of a triangle

Form 2 Summer HW : Similar quadrilaterals

Form 2 Mathematics : Visual proof of Pythagoras' Theorem

Form 2 Mathematics : Exterior angle of a triangle

Form 2 Mathematics : Sum of exterior angles of a polygon

Form 2 Mathematics : Sine of an angle

Form 3 Mathematics : Congruent triangles

Form 3 Mathematics : Furthur Exploration on SSA

Form 3 Mathematics : Mid-point Theorem

Form 3 Mathematics : Mid-points of any quadrilateral

Form 4 Mathematics : Quadratic Function (Maximization problem)

Form 4 Mathematics : Effects of a, b, c on the graph y = ax2 + bx + c

Form 4 Mathematics : Effects of a, b, c on the graph y = a(x - h)2 + k

Form 4 Mathematics : Effects of a, b, c, d on the graph y = a sin (bx + c) + d

Form 4 Mathematics : Angle at centre twice angle at circumference

Form 4 Mathematics : Angle in alternate segment

Form 5 Mathematics : Introduction to locus

Form 4 A. Math's : Area of polygon

Form 5 A. Math's : Family of circles

Form 5 A. Math's : Drawing parabola

Form 5 A. Math's : Drawing conics

Form 5 A. Math's : Sliding rod problem

Form 5 A. Math's : Parametric equations

Form 5 A. Math's : Relationship between v-t graph and s-t graph

Form 6 P. Math's : Exponential Function

Form 7 P. Math's : Complex Numbers

Form 3 Optics : Image formed by a convex lens



JavaCircles Version 1

江 主 席 考 學 生 的 五 星 問 題



Feedback from teachers and students on Javasketchpad

Features of Javasketchpad




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