### Problem solving on congruent segments

June 1, 2012

Here is a problem solving task about congruent segments. Let R be the midpoint of PQ. Construct equilateral triangles PSR and RTQ. Is SQ = […]

### Square and triangle problem

May 10, 2012

The square and triangle problem below represents a traditional way of presenting a math problem. You see this kind of problem in textbooks and workbooks. […]

### Triangle Congruence by ASA

May 3, 2012

Two triangles are congruent if their corresponding sides and angles are congruent. That’s the definition. But you do not need to satisfy all these six […]

### Angle bisector – two definitions

April 26, 2012

Definition 1. An angle bisector is a line or a ray that divides an angle in two congruent angles. In the figure below, AG is […]

### Constructing the perpendicular bisector

April 23, 2012

The objective of this activity is to construct the perpendicular bisector of a segment using compass and straight edge. The following tools will be useful […]

### The GeoGebra Interface

April 17, 2012

GeoGebra is a free dynamic mathematics software that is capable of linking concepts in algebra, geometry, calculus, and statistics. It can construct mathematical objects such […]

### Exponential function and its inverse

April 12, 2012

You can use the following interactive worksheet to help students make connection between the graphs and the equations of exponential functions and between the exponential […]

### Constructing congruent triangles based on SSS congruence

March 1, 2012

Constructing Congruent Triangles is a GeoGebra worksheet that you can use to teach students on how to construct a triangle congruent to another triangle. There are several […]

### Constructing congruent line segments

February 29, 2012

The most basic of all geometric constructions is constructing a segment congruent to a given segment. Geometric  construction is done using a compass and straight […]

### Teaching with GeoGebra

February 24, 2012

GeoGebra is a great tool for teaching mathematics. In designing or using an applet, it would be good to consider the following questions: What mathematics […]