Type:

Other

Description:

Learners observe and compare the sizes of three toy “growing” crocodiles made from water-absorbent polymers. One is it its original state, dry, hard, and about 10cm long. One is immersed in salt water in a 2-liter bottle, a bit softer, and about 20cm long. The third is in pure water in a 2-liter bottle and completely fills the bottle. This is a long-term activity. Learners can observe and record the growth of the crocodile over a period of days; it can last in this state indefinitely.

Subjects:

  • Education > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

polymer,NSDL,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-056,Physical science,Early Elementary,Upper Elementary,Elementary School,Life Science,Informal Education,Higher Education,Middle School,oai:nsdl.org:2200/20110926121544134T,polyacrylate,super-absorbent,Chemistry,Physics,absorbency,High School,Solutions,Toys,Physical Sciences,Education

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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