The authors are grateful for excellent comments and suggestions given by the editor and reviewers.
About the Authors
Hasan Unal is an assistant professor in the mathematics department at Yildiz Technical University in Istanbul, Turkey. He completed his masters and PhD degrees at Florida State University in the field of mathematics education. He teaches courses in both mathematics and mathematics teaching methods to undergraduate and graduate students. History of mathematics and its uses in learning and teaching mathematics are among his interests.
Kursat Hakan Oral is a PhD candidate in the mathematics department at Yildiz Technical University. He is interested in the teaching and learning of algebra and in history of mathematics.