An increasing number of K-12 school teachers have been using handheld, or palmtop, computers in the classroom as an integral means of facilitating education due to the flexibility, mobility, interactive learning capability, and comparatively inexpensive cost. This study involved two experiments in handheld computers: (a) a comparison of the…

We present an inference algorithm for perturbation models based on Poisson regression. The algorithm is designed to handle unclassified input with multiple errors described by independent mal-rules. This knowledge representation provides an intelligent tutoring system with local and global information about a student, such as error classification…

Spelling competence in English L2 is not the result of specific teaching and training. Two questions are discussed in this article: How do Dutch learners manage to gain control of this complicated system? And what spelling knowledge is acquired? Because beginning learners lack the necessary prerequisites for a phonological strategy, it is claimed…