What accounts for well-meaning teachers' lack of implementation of subject-matter reforms,
such as making one's classroom centered on problem solving, even when they positively …

Commentaries regarding appropriate methods for researching professional development
have been a frequent topic in recent issues of Educational Researcher as well as other …

This study illuminates claims that teachers' mathematical knowledge plays an important role
in their teaching of this subject matter. In particular, we focus on teachers' mathematical …

Why does it work to add a zero on the right when multiplying by 10, or two zeros when
multiplying by 100? Why, when the number includes a decimal, do we move the decimal …

This study compared the pedagogical contentknowledge of mathematics in US and
Chinesemiddle schools. The results of thiscomparative study indicated that …

Widespread agreement exists that US teachers need improved mathematics knowledge for
teaching. Over the past decade, policymakers have funded a range of professional …

Recently, investigators have begun to pay increasing attention to the role of teachers'
domain-specific knowledge in the area of reading, and its implications for both classroom …

Some years ago, Hatano differentiated between routine and adaptive expertise and made a
strong plea for the development and implementation of learning environments that aim at the …

In recent years, though, attitudes toward teaching mathematics to young children, including
preschoolers, again has changed dramatically. For example, the National Council of …

This article explores elementary school teachers' mathematical knowledge for teaching and
the relationship between such knowledge and teacher characteristics. The Learning …