The big gun that Shreedhar saw was made of bronze.
Have you seen anything made of bronze? What?Tribal people have been using bronze to make many things since thousands of years. One wonders how they took out copper and tin from the deep mines, melted these metals, and turned them into beautiful things!
Find out from your elders about some of the things made from bronze that were, or are still used in your house. From its colour try to identify which one of them is made from copper, which from brass, and which from bronze.
Disclaimer: The purpose of this section is to make the students interact actively with the people and the world around them. The process calls for critical observance based upon which the students can draw certain conclusions. Considering the sustenance of this process of interaction the answer to these questions have not been provided.