咦,同学们手上拿着这么多的纸干吗?哦,原来是杨浦区许昌路第五小学一年一度的科技实践活动又拉开了帷幕今年,学校的科技实践活动围绕“纸”展开,五个年级将分别从不同的角度进行纸的探秘活动。一年级同学在研究用什么样的纸折的青蛙可以跳得远。二年级同学探究的是纸桥,看看谁做的纸桥最能承重。三年级的教室里更是热闹非凡,连老师们都跃跃欲试,原来大家在效仿古人造纸呢。四年级的教室里,没有一丝声音,同学 咦, students holding so much paper in hand? Oh, the original is Xuchang Road, Yangpu District, Fifth Primary School once an annual science and technology practice has kicked off this year, the school’s science and technology activities around the “paper” Expand, five grades will be from different angles for paper exploration activities. The first grader who studied what kind of paper folding frog can jump far. Grade two students explore the paper bridge to see who can do the most load-bearing paper. The third grade classroom is crowded, even the teachers are eager, the original we follow the example of the ancient man made it. Fourth grade classroom, no trace of voice, classmates