Tag Archives: graphs

Making Sense of Power Function

The power function, , n = positive integral exponents is actually the ‘basic’ polynomial function.They are the first terms in the polynomial function. With graphing utility, it is no longer as much fun to graph function. What has become more challenging is interpreting them. Here’s are a set of tasks you can ask your learners… Read More »

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 »

Math knowledge for teaching tangent to a curve

I am creating a new category of posts about mathematical tasks aimed at developing teachers’ math knowledge for teaching. Most of the tasks I will present here have been used in studies about teaching and teacher learning. Mathematical knowledge for teaching was coined by J. Boaler based on what Shulman (1986) call pedagogical content knowledge… Read More »

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