Read the passage and answer the given questions: 

During an educational trip of Class VI, students went to the handloom house. Their science teacher wants to show how fabrics are made from yarn. Children were taking lot of interest in the process of weaving by hathkargha (handloom). Their teacher explained the two types of looms and working of that looms. Some girls learned the process, how two sets of yarns are woven to make a fabric. The trip was very knowledgeable and the children enjoyed a lot. 

(a) Explain the process of weaving. 
(b) Name the device used for making yarns. 
(c) What values are shown by teacher and students?