The hundreds chart is a valuable tool for teachers in elementary mathematics classrooms. The present study investigated the effects of spatial configurations of virtual hundreds charts on children's knowledge of base-ten concepts. Kindergarten and first-grade students were assigned to three instructional conditions in which they worked with a…

Students often experience difficulty with attaching meaning to mathematics symbols. Many students react to symbols, such as the equal sign, as a command to "do something" or "write an answer" without reflecting upon the proper relational meaning of the equal sign. One method for assessing equal-sign understanding is through…

What is childhood like today? Is it a world fraught with endless joy, fun, and games, or are children experiencing a much different reality? A child's social interactions can be a source of great enjoyment and are essential to early development. Conversely, young children routinely experience tension, ambiguity, and conflict as they navigate the…

An alternating treatments design with a control condition was used to evaluate and compare the effects of two taped-problem interventions on addition fact fluency. Both taped-problem interventions were identical with the exception of the time delay between the auditory cue of the problem and the answer. One condition used a 2-s delay and the other…

Previous research has shown that when confronted with missing-value word problems, primary school students strongly tend to use proportional solution approaches, even if these approaches are inappropriate. The authors investigated whether (besides the missing-value formulation of word problems) the numbers appearing in word problems are part of…

The purpose of this study was to describe how one primary teacher of poor and working class rural students promoted small-group dialogue about books and literary concepts. Specifically, we focused on how she guided the students from the beginning of a lesson in ways that later led to dialogue during a videotaped four-day lesson sequence. We…