PLEASE HELP?? Experiment on how to show the converging and diverging of light by lens?

Okay Okay yes i know i just asked the same question 10 min ago but im really desperate for help
Hi everybody so I am in first year and in school we had to do a practical/experiment to show the converging and diverging of light by lens and we had to finish it at home. Could somebody please tell me a method that you would use in steps as in like step 1 get a ray box step 2 etc
please answer asap
thank you
every answer is appreciated
 
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