# data[].attributes.body
put your gloves and maybe safety goggles on

# data[].attributes.body
grab all your ingredients and stuff you need
1 2- liter plastic bottle, empty and clean\
2 Utillity knife
3 dirty water
4 measuring cup
5 spoon
6 stopwatch or clock with a second hand
7 pencil and paper
8 coffee filter ( A bandanna, old  sock, a sock, napkin or paper towels work to

# data[].attributes.body
Ask a grown-up to cut the bottle in half. Then flip the bottle's top half over and put it in the bottom, so the top looks like a funnel. You'll build your filter in the top part.

# data[].attributes.body
Place the coffee filter (or bandanna, sock, etc.) at the bottom of your filter.

# data[].attributes.body
Add cotton balls, charcoal, gravel, sand, and / or other materials in layers. You can use just one of them or all of them. Tip: Think about which order to add them. Bigger filter materials usually catch bigger impurities.

# data[].attributes.body
Stir your dirty water and measure out a cup of it.

# data[].attributes.body
Get your timer ready!

# data[].attributes.body
Pour a cup of dirty water into your filter. Start the timer as soon as you begin pouring.

# data[].attributes.body
Time how long it takes for all the water to go through the filter.

# data[].attributes.body
Carefully scoop out the filter materials, one layer at a time. What did each layer take out of the water

# data[].attributes.body
clean up of what ever mess you made

# data[].attributes.body
your finally finished