Examines the development of intuitive theories of motion among college students and children between the ages of 4 and 12. School-aged children made more erroneous predictions on the path a ball takes upon exiting a curved tube than preschoolers, kindergarteners, and college students. Results related to the "growth error." (Author/BB)

This investigation of the development of young children's concept of evaporation examines their intuitive explanations of real world events involving evaporation. A study of the effects of providing evidence contradicting their explanations and of directing their attention to relevant situational features provides insight into the development of…

An influential proposal about aquiring mathematical knowledge is that it entails linking instruction-based concepts to intuitions derived from informal activities. In the case of non-positive numbers, informal knowledge is unlikely to emanate from observing physical objects, because non-positive objects or sets of objects do not exist. However, it…