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《测量呼吸和心跳》是五年级上册《呼吸和血液循环》单元的起始课,教材围绕定量观察、统计分析来展开,以测量呼吸和心跳次数的活动为主线来组织。引导学生认识运动前后呼吸和心跳的变化。在前不久的
“Breathing and Heartbeat Measurement” is the start of the fifth grade “Breathing and Blood Circulation” unit. The materials are based on quantitative observation and statistical analysis. The measurement is based on activities that measure the number of breaths and heartbeats. Guide students to understand changes in breathing and heartbeat before and after exercise. Not long ago