Soil Sleuths: Karina's Flower Growth Experiment!
Let's become soil scientists and see which home is coziest for our flowers!
Part 1: Setting Up Our Experiment (Day 1)
- Meet the Soils: Look closely at the two soils. Describe how they look and feel. Which one seems like it holds more water? Which one feels gritty? Label one pot 'Organic Soil' and the other 'Sandy Soil'.
- Potting Time: Fill each pot about three-quarters full with its labeled soil.
- Planting Seeds: Carefully plant 2-3 flower seeds in the center of each pot. Follow the seed packet instructions for planting depth (usually about 1/4 to 1/2 inch deep). Gently cover the seeds with soil.
- First Watering: Give each pot the same amount of water – just enough to make the soil damp but not soaking wet.
- Sunshine Spot: Place both pots together in a sunny spot where they will get the same amount of light each day.
Part 2: Observation and Care (Daily/Weekly)
- Water Watch: Check the pots daily. Water them equally when the top feels dry. Remember, sandy soil might dry out faster!
- Sprout Spotting: Look closely each day for the first signs of sprouts! Record the date when you first see a sprout in each pot on your Observation Sheet.
- Measure Up (Weekly): Once the sprouts are big enough to measure (maybe after the first week), gently measure the height of the tallest plant in each pot using a ruler. Count the number of leaves on the tallest plant in each pot. Record this information on your Observation Sheet every week (pick the same day each week).
Part 3: Graphing Our Growth (After 3-4 Weeks)
- Data Time: Look at your Observation Sheet. Let's focus on the height measurements from the last week.
- Bar Graph Basics: Take your graph paper. Draw a vertical line (Y-axis) on the left and a horizontal line (X-axis) at the bottom.
- Labeling: Label the Y-axis 'Plant Height (cm or inches)'. Number it starting from 0 at the bottom, going up. Label the X-axis 'Soil Type'. Write 'Organic Soil' and 'Sandy Soil' spaced out along this line.
- Drawing Bars: Draw a bar above 'Organic Soil' that goes up to the final height you measured for the plant in that pot. Draw another bar above 'Sandy Soil' showing the final height for that plant.
- Title It: Give your graph a title, like 'Flower Height in Different Soils'.
Part 4: Artistic Observations (Ongoing/End of Experiment)
- Sketching Sessions: Choose a few days during the experiment (maybe week 1, week 2, and the final week) to draw the plants.
- Detail Detective: Use your drawing paper and crayons/colored pencils. Look closely at the plants in each pot. Draw the stem, leaves, and any buds or flowers. Try to show how they look different or similar in the two pots. Label your drawings with the date and soil type.
Part 5: Writing Our Report (End of Experiment)
- Scientist Summary: Write a paragraph or two about your experiment. Include:
- What you wanted to find out (your question).
- How you set up the experiment (what you did).
- What you observed (what happened to the plants in each soil type? Use your measurements!).
- What your graph shows.
- Your conclusion: Which soil seemed better for growing these flowers and why you think that.
Part 6: Discussion (End of Experiment)
Let's talk about it! Why do you think the plants grew differently? Which soil do you think held water better? Which soil might have more 'food' (nutrients) for the plants? What did you learn about soil and plants?