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Author:
Journal / Book Title:
Year:
Volume:
Issue:
ting ting shi hou
Author(s):
NAN Chun
Pages:
37
Year:
2013
Issue:
12
Journal:
Guided Reading for Primary School Students
Keyword:
盒子
;
松香
;
实验过程
;
铅笔
;
实验材料
;
小孔
;
模仿
;
纸盒
;
不同材料
;
木盒
;
Abstract:
<正>下面向同学们介绍一个有趣的实验,用一个小盒子模仿狮吼或狗吠。实验材料:一个纸盒(木盒或白铁盒);一支铅笔;一段绳子;少许松香等。实验过程:1.在小盒的一边开一个小孔,然后把一支拴着一根绳子的铅笔塞入小孔中。用松香擦擦绳子,就像擦乐器的弓弦一样,使它
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