The diagrams below show stages in the development of simple cooking equipment.

The diagram gives information about the three different stages of development in easy cooking tools. Overall, it can be seen that there are three pieces of cooking equipment classified as A, B, and C, which were developed from stone pot to metal pot. Initially, people cook with stone vase-like utensils, which was the most prevalent equipment for cooking; however, clay pots were introduced, as the stone pot size was big to use; moreover, clay shield equipment was compact, and it enhanced the taste of the food. Finally, metal cooking equipment has been used by many people because of the multipurpose usage. As we can see, it looks like two buckets attached in an inverted position, where there is a grate to fill the required charcoal and the ashes are collected down; besides, there is a door that allows air to pass and collect ash as well. Additionally, three v-shaped rod-like supports hold any equipment in place, and there are two handles to carry the equipment easily. Furthermore, the inside lining is made up of clay to produce and maintain the heat to cook faster.