| *** 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 |