EXPERIMENTS INVENTIONS DISCOVERIES SUBJECTS
1.rocket 1.computer 1.solar system 1.chemics
2.hovercraft 2.telephone 2.theory of evolution 2.physics
3. lightning 3.tablet 3..America 3.English
4 selection 4. television 4. DNA 4. P. E.
5 acids 5.wheel 5. black holes 5. Geogrphy