设计构思:我设计并组织学生采用一种透明小玻璃瓶替代塑料笔帽和橡皮泥来制作“潜水艇”,放在一个装有水的大塑料瓶中,挤压塑料瓶可以清楚看到玻璃瓶中水位的变化即气体被压缩的过程,有助于学生理解“小潜艇”沉浮的基本原理。制作材料:三精葡萄糖酸钙口服液玻璃瓶(蓝瓶)或科学 Design Concept: I designed and organized students to make a “submarine” using a clear glass vial instead of a plastic cap and plasticine in a large plastic bottle filled with water, squeezing the plastic bottle to see clearly the glass bottle Changes in the water level that is the process of gas compression, help students understand the “submarine” ups and downs of the basic principles. Production Materials: Three fine calcium gluconate oral liquid glass bottles (blue bottle) or science