The topic or unit that I thought was most interesting in I&S is the unit Changing Places. When we got to learn and explore more about the history in places around the world, including able to learn how to make a good timeline, so that everyone can understand easily.
We also got to learn more about different times that happened all over the world, how to make a good timeline too, and also how to communicate what we learnt.
With wars, destroying many places, old transportations, long time scenes, and more too
For example, learning more information on WWII, China's and Hong Kong's history. As well as any other important events that happened throughout the world's history, like the Hong Kong handover back to China, that happened in 1997. Also going to places that tell more about history, with every precise detail.
Also watching different videos, first experiences, to get more information on history, and how people felt at that time.
So, since I like history myself, I think that this topic or unit is the best overall, in the I&S classes. Learning a lot of different new things. :D