Links among concurrent and longitudinal changes in pubertal development and empathic ability from ages 10 to 13 and neural responses while witnessing peer rejection at age 13 were examined in 16 participants. More advanced pubertal development at age 13, and greater longitudinal increases in pubertal development, related to increased activity in…

This paper is based on a presentation given at National Council of Teachers of Mathematics (NCTM) in 2005 in Anaheim, California. It explicates the developmental stages of the child as posited by Piaget. The author then ties each of the stages to developmentally appropriate mathematics instruction. The implications in terms of not imposing…

The purpose of the study was to examine if there was a significant difference between first-grade English Learners (EL) who constitute a majority (greater than 50%) of the English language mainstream classroom (homogeneous grouping) and first-grade EL who constitute a minority (less than 50%) of the English language mainstream classrooms…

In response to California Legislation that would change the cut-off for the minimum 5-year entrance age from December 2 to September 1, this paper reviews the literature discussing the appropriate age for beginning school. The review includes a brief history of kindergarten and its place in California law; discusses the possible impact of the…