A hands-on approach to studying quadratic functions emphasizes the engineering design process.

# Search Results

### Donna M. Young

Students often view questions about polynomials—finding the zeros of a polynomial function, solving a polynomial equation, factoring a polynomial, or writing a polynomial function given certain properties—as discrete, unconnected processes. To address students' confusion about the many directions given for working with polynomial functions and to enable them to gain a true, conceptual understanding of polynomial functions, I created a graphic organizer (see **fig. 1**).

### G. Patrick Vennebush and Diana Mata

Students analyze items from the media to answer mathematical questions related to the article. This month's clips discuss misrepresented formulas.

Readers comment on published articles or offer their own mathematical ideas.

### Wayne Nirode

To introduce sinusoidal functions, I use an animation of a Ferris wheel rotating for 60 seconds, with one seat labeled *You* (see **fig. 1**). Students draw a graph of their height above ground as a function of time with appropriate units and scales on both axes. Next a volunteer shares his or her graph. I then ask someone to share a different graph. I choose one student with a curved graph (see **fig. 2a**) and another with a piece-wise linear (sawtooth) graph (see **fig. 2b**).

### Lorraine M. Baron

Assessment tools–a rubric, exit slips–inform instruction, clarify expectations, and support learning.

### Arsalan Wares

A paper-folding problem is easy to understand and model, yet its solution involves rich mathematical thinking in the areas of geometry and algebra.

### Michael J. Bossé, Kathleen Lynch-Davis, Kwaku Adu-Gyamfi, and Kayla Chandler

Teachers can use rich mathematical tasks to measure students' conceptual understanding.

### Heather Lynn Johnson, Peter Hornbein, and Sumbal Azeem

A computer activity helps students make sense of relationships between quantities.

### Jon D. Davis

Using technology to explore the coefficients of a quadratic equation leads to an unexpected result.