30. IO / Sc. and techn.

*** In ontwikkeling / **** Science and technology

*** 30 In ontwikkeling **** 30 Science and technology
  **** 30-1 Talking about
  **** 30-2 Invention and innovation 
       Present en perfect tenses
  **** 30-3 A better view 
       Present continuous
  **** 30-4 Nanotechnology
       Verb tenses
  **** 30-5 Future of technology