平衡实验一活动目标1.初步感受杠杆两端重物和平衡之间的关系;2.练习科学的记录方法。关键经验杠杆两端要放同样多的积木块,才可以保持平衡。活动准备红蓝棒“4”四根、最短的红棒四根(做支点)、积木若干块、记录表、铅笔。 Balanced Experiment 1 Activity Objectives 1. Initially feel the relationship between weights and balances at both ends of the lever; 2. Practice the scientific recording method. Leverage key blocks of leverage at both ends to maintain the balance. Activity preparation red and blue stick “4 ” four, the shortest red stick four (do fulcrum), building blocks, records, pencil.