Describes a take-home experiment in which students measure the diffusion of acid through acid-filled capillary tubes immersed into base solutions and vice versa. Students represent and analyze the effects of ambient temperature, molecular weight, and concentrations of the solutions on that movement. (MDH)

Examines long-term effects of two types of practice task on low-proficiency English-as-a-foreign-language writing. Two classes of freshmen at a Japanese women's college were assigned homework tasks based on picture stories. Results showed that low-proficiency students can improve their writing proficiency more by writing out picture stories than…