一个能即兴发挥的科学教师,一定是善于驾驭课堂,使教学充满情趣的教师。“即兴”也可谓之乘兴、随兴,靠的是厚积薄发。一如渊潭之积水,蓄之愈深,则流之愈长。没有深厚的科学素养积淀,没有长期的实践和磨砺,是不可能在瞬间完成奇妙的联想并作出精当的语言表述的。例如,恐龙给我们留下了 A science teacher who can improvise and play must be a teacher who is good at controlling the classroom and making the teaching full of fun. “Impromptu ” can also be said to take Xing, Xingxing, rely on the profound knowledge. As Yu Yuan of water, storage of the more deep, the flow of the longer. Without deep accumulation of scientific accomplishments and without long-term practice and sharpening, it is impossible to accomplish fantastic associations and make elaborate language statements in an instant. For example, dinosaurs left us