Tag Archives: polynomial functions

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 »

What is an algebraic function?

An algebraic function is a function created by applying the operation of addition, subtraction, multiplication, division, and extracting the nth root. Let me give an example. Suppose you have the function f and g where f is a linear function and g is a constant function.  Let f(x)=x and g(x) = -3. We can create… 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 »

Algebra test items – Graphs of rational functions

TIMSS (Trends in international Math and Science Study) classifies test items in terms of cognitive domains namely, Knowing facts, procedures, concepts; Applying the facts, procedures and concepts usually in a routine problem solving task; and, Reasoning. Click here for detailed descriptions of each. In my earlier post about this topic on using the TIMSS Assessment Framework for constructing test items I presented a set… Read More »

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