How to Make a Water Filter

a way to turn saltwater into drinking water.

Step 1: Materials

bowl
plastic wrap
rubber bands
rock
water
salt
small jar

Step 2: Finish the Construction

next put the plastic wrap on the top a little loose and put the rubber band on the edges. then put the rock in the middle above the glass.

Step 3: Wait

wait as long as you want, set it directly in sunlight ,just observe what happens after about a half hour, the the water starts to collect on the top. when you want, open it and taste the water.
enjoy!