Does mathematical content knowledge matter for elementary teachers?
In general, elementary students achieve more in math when taught by teachers with greater mathematics content knowledge.15
Unfortunately, completing a bachelor's degree or a teacher preparation program does not guarantee that teachers know the math they'll be expected to teach. One study found that many elementary teacher candidates had misconceptions about statistics and probability as they were about to enter student teaching (the culminating experience of most teacher preparation programs).16 A national survey found that few elementary teachers felt very well-prepared to teach specific elementary mathematics topics, and the proportion who felt very well-prepared declined between 2012 and 2018.17 This sense of inadequate preparation has persisted for decades; in 2002, surveys of elementary teachers in Michigan and Ohio18 indicate that they did not feel well prepared to teach the specific mathematics topics at the elementary level or slightly beyond.
Most research finds that teacher candidates' mathematics coursework seems to yield benefits for their students. Several studies demonstrated that teachers deliver stronger lessons on topics that they learned in their teacher preparation programs.19 One study of teacher preparation programs (both traditional and alternative) in New York City found that math courses correlated with increased student achievement in math during the second year of teaching,20 and another study found that not only the number of content courses but also the types of courses matters for building candidates' knowledge,21 although one study found no correlation between teachers' math education credits and student achievement in math.22
How much coursework do elementary teacher candidates need?
Prospective elementary teachers need mathematics courses which are designed specifically for teachers and which impart a deep understanding of elementary and middle school mathematics concepts.23 The Conference Board of the Mathematical Sciences (CBMS)24 recommends that aspiring elementary teachers take 12 semester-credit hours in "elementary mathematics content" covering numbers and operations, algebra, measurement and data, and geometry, while the National Council of Teachers of Mathematics (NCTM)25 recommends taking at least three college-level mathematics courses in the content essential to elementary grades, in addition to instruction on pedagogy.26
The Mathematical Education of Teachers II (MET II) study draws from the Common Core State Standards to recommend that elementary teachers be prepared in the domains of counting and cardinality, operations and algebraic thinking, numbers and operations, measurement and data, and geometry, as well as connections to mathematics topics typically addressed in the middle grades.27
Some research casts doubt on the extent to which current teacher preparation programs adequately meet the mathematics needs of aspiring elementary teachers. Several surveys of over 400 institutions, taken 6 years apart, found that most were not meeting the recommendation that elementary candidates take at least 12 semester credit-hours of mathematics content.28 Another study found that mathematics content courses were inconsistent in whether they engaged teacher candidates in the Common Core Standards for Mathematical Practice.29
What types of math courses should elementary teacher candidates take?
The preponderance of available research indicates that the mathematics content coursework needed by elementary teachers is neither pure mathematics nor pure methods but a combination of both.30 Teachers with more specialized content knowledge can better design lessons using math-science integration, use manipulatives in their lessons, and employ student-centered approaches to teaching mathematics.31
Experts suggest that educator preparation programs should structure requirements to address both subject matter knowledge (including common content knowledge and specialized content knowledge) and pedagogical content knowledge (including knowledge of content and students and knowledge of content and teaching).32 The approach described by Lee Shulman33—built off of early work begun by John Dewey and recently expanded by Deborah Ball—explains the complexity of teaching by delineating the domains of knowledge needed for teaching.
What should elementary teacher candidates learn about specialized mathematics content knowledge?
Elementary teachers need to grasp more than the mathematical knowledge and skills required in the curriculum. They need to master the mathematical knowledge that is unique to teaching.34 Examples of what teachers need to learn include being able to create and tailor representations of math problems to suit the "instructional purposes," being able to not only carry out but also explain algorithms for solving problems, and conducting error analysis.35 An effort to "unpack the mathematical work of teaching framework" to further explore what teachers should be able to do include activities such as, "Given conflicting explanations, determine which is valid and why," "Write a mathematically valid explanation for a process or concept," "Given a word problem, choose another word problem with the same structure," and "Given a set of representations, choose which does or does not show a particular idea."36
What should elementary teacher candidates learn about mathematics pedagogy?
Research on mathematics methods or pedagogy, although limited, also indicates the value of mathematics methods courses,37 including documented gains in mathematical knowledge for teaching.38 Research generally supports the importance of teachers' knowledge of fundamental math concepts as well as their ability to apply mathematics content in teaching (learned in mathematics methods courses), rather than their just knowing the mathematics content.39
Conclusion
In 2022, NCTQ revised its Elementary Mathematics Standard in keeping with the research that elementary teachers must be equipped with the mathematics content and pedagogical knowledge to effectively support learning by all students. NCTQ's examination of the opportunities a program provides to teacher candidates includes the domains of knowledge a teacher needs to bring to the classroom — the specialized mathematical content knowledge or knowledge of mathematics that is specific to teaching mathematics and pedagogical knowledge for teaching mathematics or the intersections between the mathematical content that comprises the curricula and knowledge of how student learn and effective methods to teach.40