Videos on natural hazards

Some videos to understand the reasons behind natural hazards:
- http://www.youtube.com/watch?v=bG37DEAb3Bc  
- http://www.youtube.com/watch?v=3FM4E19PZhw
- http://www.youtube.com/watch?v=sBkMLYUyUZg
- http://www.youtube.com/watch?v=chbbiSCczB8
- http://www.youtube.com/watch?v=ryrXAGY1dmE
- http://www.youtube.com/watch?v=1-HwPR_4mP4
- http://www.youtube.com/watch?v=RpFD8g8PBJM&list=PL62E589E4304DCB99&index=3
- http://www.youtube.com/watch?v=PrWCwPhaJw8
- http://www.youtube.com/watch?v=w8XJh1VCGIo
- http://www.youtube.com/watch?v=WgktM2luLok
- http://www.youtube.com/watch?v=yRH1PAJGlvo

Videos of Rube Goldberg machines

http://www.youtube.com/watch?v=EjOFeC-Dm7U

http://www.youtube.com/watch?v=VI47chBIgOU

 

http://www.youtube.com/watch?v=cv5WLLYo-fk

http://www.youtube.com/watch?annotation_id=annotation_338765&feature=iv&src_vid=cv5WLLYo-fk&v=cVgcmmS0W3Q
  

Sorting the six categories of simple machines

Students were given pictures of various machines and objects which they sorted into the six different categories of simple machines. Here are some pictures of students working in groups:

 

Experiments with simple machines

Students consolidated their understanding on the working of simple machines and the principles behind them.
They were guided throughout by Mr. Sudipto Roy (physics teacher, senior academy), through different experiments. The concepts of force, load, effort and their interconnections were seen and experienced by the students.
Some snapshots are below:

Mr. Sudipto Roy helping students to carry out experiments with four pulleys vis-vis one.

Students experiencing the effect of wheels through marker pens underneath the white board which is use for sliding.

Students are witnessing effort on an inclines plane