My corn always grows so slow. I want some fertilizer but how much should I use?
1. Ask a testable question.
I found out that too little fertilizer is ineffective but too much fertilizer can kill my crops.
2. Research the problem.
I think that too little fertilizer will be ineffective but I also think too much can be harmful.
3. Create a hypothesis.
I will put 50 liters of fertilizer on Field A, 100 on Field B, 150 on Field C, and only water on Field D. The control are the fields, the independent variable is the amount of fertilizer, and the dependent variable is the amount of corn.
4. Perform an experiment.
After one month, Field A has 150 ears of corn, Field B has 300 ears of corn, Field C has 450 ears of corn, and Field D has 50 ears of corn.
5. Analyze data
In conclusion, using 150 liters gives me the most ears of corn.