アカマクミドリムシの教材化とそのビデオ教材の作製

抄録

Euglena is one of the most famous unicellular organisms in the water. This organism has characteristics of both plant and animal, and can be utilized effectively as teaching materials in understanding the mechanism of moving and the process of asexual reproduction. Euglena sanguinea Ehrenberg is the typical species making the water red on the water surface of ponds or paddy fields. Using video-recorded pictures of this species, we developed a video program as a teaching material entitled “The Life and Reproduction of Euglena”. This is a 7-minute video program showing the various stages of the life cycle in this species. The video program was tried out at biology classes in the senior high school to assess the effectiveness in teaching the reproduction. The results were as follows: (1) The Students could make progress with their motivation for the learning and observation of living things. (2) The students were able to obtain some important information on the life and reproduction on this organism. (3) The students were greatly moved hy the scene of the excystment process of the cells.