# Tag Archives: function

## Christmas GeoGebra Applet

Here’s wishing you the choicest blessings of the season. The applet was adapted from the work of Wengler published in GeoGebra Tube. Being an incurable math teacher and blogger I can’t help not to turn this unsuspecting christmas geogebra applet into a mathematical task. Observe the candles. 1. When is the next candle lighted? 2. On… Read More »

## Strengths and limitations of each representation of function

Function is defined in many textbooks as a correspondence between two sets x and y such that for every x there corresponds a unique y. Of course there are other definition. You can check my post on the evolution of the definition of function. Knowing the definition of a concept however does not guarantee understanding… Read More »

## What are the big ideas in function ?

Function is defined in many textbooks as a correspondence relationship between two quantities x and y such that for every x, there is one and only one value for y. Definitions are important to know but in the case of function, the only time students will ever use the definition of function as correspondence is when… Read More »

## Embedding the idea of functions in geometry lessons

GeoGebra is a great tool to promote a way of thinking and reasoning about shapes. It provides an environment where students can observe and describe the relationships within and among geometric shapes, analyze what changes and what stays the same when shapes are transformed, and make generalizations. When shapes or objects are transformed or moved,… Read More »