Step by step procedure

1. Select "texture" from the Selection box. 
2. Determine the correct rock's texture name for selected texture which is available at the left bottom side.
3. If selected texture name is wrong re-attempt the selection. If selected texture name is right you will proceed to questionnaire based on texture.  
4. Attempt all questions related to selected texture.
5. Click on the submit button and you will get the result of the selected texture .
6. You can re-attempt the questions to check correct answers.
7. After successful identification, select the another texture from select box and repeat the process until all the textures get identified to complete the experiment simulation.