Reference Links

This link explains the concept of congruent figures.
https://www.mathsisfun.com/geometry/congruent.html

This link provides information related to congruent figures.
https://www.youtube.com/watch?v=86iU3fypTd4

This link has a few experiments on conduction.
http://education.seattlepi.com/science-experiment-heat-conduction-metals-water-4750.html