Barsha Sarkar Madam.. create questionnaire of particular work and get it filled in front of him/her and evaluate it for better conclusions. Or Skill oriented work assign and noted the point of observation whether he/she doing well or not and how many times they commit mistakes.
Using a team of independent observers (Raters), armed with a scaled observation schedule. Subject the ratings to inter-rater agreement tests before adopting it for use.
First of all you should consider the whole annual cycle of the activities that you need to test because there are always "bad" days (if you only test once). Second, you should value all kinds of knowledge and its different ways to show them. If you want to assess their perception, a survey is fine. It is very important to establish appropriate valuation ranges. Also, you can contrast with your own valuation by techniques as "participant observation".
Barsha Sarkar Madam.. create questionnaire of particular work and get it filled in front of him/her and evaluate it for better conclusions. Or Skill oriented work assign and noted the point of observation whether he/she doing well or not and how many times they commit mistakes.
Barsha Sarkar, the organization of the farm illustrated in my paper, has three workers, and the owner-director who works with them. The three workers are able to use the hardware and the basic commands of the software. The owner-director has a master's degree in Agronomy and is skilled on hardware and software. So he enters all the required parameters in the field computers, leaving the simplest operational tasks to the workers. Everyone in the farm Barsha Sarkar performs all agricultural tasks, even manual ones. One cannot think that a farm can bear the costs of people dedicated to carrying out only the tasks related to Precision Farming
For me I would give them a task and give them a specified time to complete the work as some may not know how to read and write but good at practical work.....