I hypothesize that the paper bags will compost faster than the green 'compostable' bags. I hypothesize that the green 'compostable' bags will compost slower than the paper bags, and/or not compost at all in the span of time given.

Controlled variable(s): Size of objects composting, amount of dirt in each container, size of containers, temperature containers are kept in,place containers are kept in.

Manipulated variable: Type of matter that is composting. Ex: Compostable bag, paper bag.

Dependant variable, or what is changing: The time it takes for each object to compost.

Materials you'll need: Compostable green bag, Paper bag, 8 plastic part cups, kitchen measuring tools, scissors, Soil/organic compost, Cardboard shoe box (optional)

Step 1: Grab your coop compostable bag and cut 4 3x3 cm squares with your scissors.

Step 2: Repeat step 1 with the paper bag

Step 3: Grab your 8 plastic party cups and fill each one with 1.5 cups of soil.

Step 4: Set your coop compostable squares flat in 4 of the cups

Step 5: Repeat step 4 with the paper bag squares

Step 6: Lable

Things I observed WHILE MAKING my project:

-The compostable liners were very thin compared to the thick paper bags.

-The compostable liners stretched both ways, the paper bags didn't.

-The paper bags absorbed water, whilst the compostable liners were nearly hydrophobic and repelled water

-The compostable liners curled up when they made contact with the soil.

Things I observed AFTER setting up

-Mold started to grow on the paper bags a few days after watering/setting up. There was mold on the green compostable bags aswell, but not as much as there was on the paper bags.