Although some condom manufacturers still use talc as a dry lubricant, others use dry lubricants such as silicone and cornstarch. The harmful effects of talc on human tissue were first recorded in the 1930s. Thirty years later there was a reported case of a woman who had a significant amount of talc in her peritoneal (abdominal) cavity talc which matched that found on the surface of her husband's condoms (Lancet, 1963; 1: 1295-6).
Marcia Taylor, JobLink 2000. The language experience approach (LEA) is a whole language approach that promotes reading and writing through the use of personal experiences and oral language. It can be used in tutorial or classroom settings with homogeneous or heterogeneous groups of learners. Beginning literacy learners relate their experiences to a teacher or aide, who transcribes them. These transcriptions are then used as the basis for other reading and writing activities.
The unique feature of PBL is the fact that it is a problem driven, student-centered learning approach where the student assumes major responsibility in the learning process and the role of the instructor is that of a facilitator and a discussion leader (Schwartz, et. al. p. 2).