Preparation materials: peanuts, red beans, mung beans, coix seed, thread balls and plasticine.
Step 1: Single-celled organisms can be made of peanuts, red beans, mung beans, coix seed and thread balls that are common at home. Just place the picture according to the required position.
Step 2: Plant cell model and animal cell model made of plasticine.
Function of biological teaching aid and its teaching significance
Enhance students' understanding of knowledge. Self-made teaching AIDS can help students better understand biological knowledge points. When teachers explain the cell structure, they can make a cell structure model by using waste foamed plastics, and self-made teaching AIDS can effectively improve students' interest in learning. When teachers take out their own teaching AIDS, students' curiosity and thirst for knowledge will be aroused, so that they can listen more carefully.
The process of cultivating students' practical ability and innovative spirit requires students to operate, try and explore, which can not only cultivate students' practical ability and innovative spirit, but also make students feel better in the production process. To improve teachers' teaching level, self-made teaching AIDS require teachers to have certain hand-made ability and creativity, which can not only make teachers more familiar with teaching materials and teaching objectives, but also improve teachers' teaching level.
Self-made teaching AIDS play a very important role in biology teaching. It can not only enhance students' understanding of knowledge, improve their interest in learning, cultivate their practical ability and innovative spirit, but also improve teachers' teaching level.
Improve the efficiency of perception and effectively promote the mastery of new knowledge. What students have learned is summarized and accumulated by predecessors in long-term practice, which is abstract. However, students are young, inexperienced and lack of "pre-concept" in their minds, so it is difficult to accept such knowledge. Teaching AIDS can turn abstract into concrete, provide students with perceptual materials, form perceptual knowledge and effectively promote the mastery of knowledge.
Biology teaching is inseparable from experiments and teaching AIDS. Intuitive, concrete and vivid teaching AIDS can be used as cognitive media in teaching. The carrier of information transmission and exchange. The degree to which students accept information depends on their perception of relevant information. Choosing and using teaching AIDS well is an important teaching link to improve classroom teaching efficiency.