1. Bean Plants R. Trickle B. Belvill S. Smith

2. Purpose Do different amounts of water affect the growth of bean plants?

3. Hypothesis We think that the plant that gets watered with 1 teaspoon will grow the tallest because it was the tallest to start with.

4. Materials We need:  3 Styrofoam cups  3 Styrofoam bowls  1 nail  3 bean plants  1 tablespoon  1 teaspoon  ¼ measuring cup  Sunny window  Pen  Recording sheet  Potting soil  Water  Ruler

5. Procedure  Gather all materials.  Fill each cup ½ full with potting soil.  Place a bean plant’s roots into each cup and continue to add soil until cup is almost full.  Pack soil lightly with fingers.  Poke a nail though the bottom sides of each cup to allow drainage.  Label each cup with a pen to identify group members.  Label one cup “1 Teaspoon”, label a 2 nd cup “1 Tablespoon”, and label the 3 rd cup as “1/4 Cup.”

6. Procedure  Measure each plant’s starting height in centimeters and record on data sheet.  Place all plants in the same sunny location.  Water each plant according to how the cup is labeled on each Monday, Wednesday, and Friday for 4 weeks.  Measure the growth of each plant on Mondays for 4 weeks and record the growth on the data sheet.

7. Variable and Controls  Amount of Water  Same sunny window  Same soil type  Same type of liquid  Same amount of soil  Same kinds of plant

8. Results The plant that was watered with ¼ cup of water grew 14.5 centimeters. That plant grew the most. The plant that was watered with 1Tablespoon grew 8 centimeters. Its growth was in between the other two plants’ growth. The plant that was watered with 1 teaspoon did not grow at all. The plant that was watered with ¼ cup of water grew 14.5 centimeters. That plant grew the most. The plant that was watered with 1Tablespoon grew 8 centimeters. Its growth was in between the other two plants’ growth. The plant that was watered with 1 teaspoon did not grow at all.

9. Conclusion We learned that plants need plenty of water to live. Water helps move nutrients from the soil up through the roots to the plant. This refutes our hypothesis.