Issues Related to Learners. Advances in technology have produced dramatic changes in how students are able to learn, what they should learn, what kind problem solving situations they should be able to address, and what stages of problem solving tend to be emphasized. However, new technological tools, representations, and leaning environments not only change the means and goals of learning, they also change the learners themselves. Generalizations that might have been valid for students-without-tools often simply do not apply to students-with-tools. Therefore, careful research is needed to document technology-related changes in thinking, visualization, communication, and problem solving. Research also is needed about how communication technologies may change the ways learners interact productively with one another, with teachers, and with information and data.