August 22, 2014

Objectives To find the missing addend in an addition sentence To write addition sentence with missing addend into subtraction sentence To give the relationship between […]

### Investigating polygons with equal area

July 24, 2014

Investigating polygons with equal area Guillermo BautistaI am interested in integrating technology in teaching mathematics particularly on the use of GeoGebra. You can contact me […]

### Applet for Presenting Area Problem

November 7, 2013

One of my favorite ways of presenting a problem is not presenting the problem at all but just letting learners observe first and then ask […]

### Applet for Teaching Triangle Similarity

October 21, 2013

Two or more triangles are similar if their corresponding angles are congruent. It also follows that if two triangles are similar, their corresponding sides are […]

### Dynamic Worksheet for Teaching Geometric Relations

March 6, 2013

Here is a dynamic worksheet for teaching and reviewing some geometric relations such as sum of angles in a triangle, angles of parallelograms, corresponding angles, […]

### Applet for area of trapezoid

February 26, 2013

You can use the following applet to help your students discover the area of trapezoid. The only prerequisite knowledge is area of a parallelogram which […]

### Composing and Decomposing Numbers Using Addition

January 25, 2013

Number relationships provide the foundation for strategies that help pupils remember basic facts. Throughout mathematics in Kindergarten-Grade 2, students develop numerical fluency with conceptual understanding […]

### Identifying relationships – an activity about exponents

January 25, 2013

Here is an activity that you can use to develop ideas related to the topic Exponents. You can use it as context to discuss the […]

### Completing the Square Solver with Visuals

January 18, 2013

You can use this dynamic worksheet to have students explore and discover the procedure of completing the square for solving quadratic equation of the form x2+bx=c. Note […]

### Dynamic worksheet for counting chords and diagonals

January 4, 2013

Here is a dynamic worksheet you can use in problems involving chords of circles and diagonals of polygons. The figure produced by the worksheet not […]