In this action research, first-graders were challenged to cope with a sequence of modelling tasks involving an analysis of given situations and choices of mathematical tools. In the course of the sequence, they underwent a change in the nature of their problem-solving processes and developed modelling competencies. Moreover, during the task…

Seven-year-old triplets with autism displayed off-task behavior that threatened their continued placement in a general education first-grade classroom. A descriptive Functional Behavioral Assessment (FBA) was conducted for each student. Data from structured interviews and direct observations were used to identify the functions of their off-task…

As young children make sense of mathematics, they begin to see with new eyes. What once was uncertain may now be determined. Objects become countable; fingers become tools; and numbers become more than just names. Educators revel in such developments--which mark significant progress toward more sophisticated understanding of number--and work…