Scientific method

Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions  

Susan said, “If I fertilize my geranium plants, they will blossom.”

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis   
• draw conclusions

Johathan’s data showed that household cockroaches moved away from raw cucumber slices.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Rene grew bacteria from the mouth on special plates in the laboratory.  She placed drops of different mouthwashes on bacteria on each plate.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis   
• draw conclusions

Kathy used a survey to determine how many of her classmates were left-handed and how many were right-handed.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Dana want to know how different are synthetic fibers from natural fibers.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Jose saw bats catching insects after dark.  He asked, “How do bats find insects in the dark?”

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Justin wondered if dyes could be taken out of plant leaves, flowers, and stems.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Arjulia soaked six different kinds of seeds in water for 24 hours.  Then she planted the seeds in soil at a depth of 1 cm.  She used the same amount of water, light, and heat for each kind of seed.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis
• draw conclusions

Bob read about growing plants in water.  He wanted to know how plants could grow without soil.

• recognize a problem
• test the hypothesis with an experiment
• form a hypothesis   
• draw conclusions