Today I learnt about a Water Filteration. I put the rocks on top to filter out large leaves, sticks, and pther large objects. Next I placed the sand into my water bottle. The sand filters out a lot of the smaller pieces of rubbish, small bugs, insects, etc. Lastly I placed cotton balls at the bottom to help clean out any rubbish that was left over. I think this would clean the dirty water out well, but it would still be better to boil the left over watee befoe drinking it.
