I have researched my experiment and when I have finished choosing my project I search the ingredients I needed for my experiment.
Where can I get clean sands? May this can happen? I research more than 10 days.

I try to Guardian or Fair Prize to purchase my ingredients. It was hard to find clean sand and clean rock. So I used the sand in the sandpit in my school. Also, I used the rocks that is in the playground.

I was writing my step for the last time and saw the video that I saw when I was researching. It was the easiest part of the steps.

First I need to use ground charcoal bout I couldn't grind charcoal so I replaced it with rock.

The step was easy to follow but it didn't work for the first time so I was little upset.

I purified water with my filter

I research again to find out how to know that the water that I purified is a clean.