This is our “make a water purifier with materials on an island” project.
(Blue) The engineering of this project was the water going through the dirt and rock and sand. That purifies the water and it drips through the cloth until it falls into the bottom area. You can twist the bottom and that turns into a covenant cup.
(Red) The items we used were… *String (vines) *cloth *we had a pocket knife *water bottles *glue gun (tree sap) *gravel *dirt *sand *water from a lake
(Green) The challenge was that the cup was too small and there wasn’t enough room for more rock and sand so we cut another water bottle and added it to our project.