Sprout Race Worksheet Name:
Date:
Multi-Day Science Investigation
Sprout Race: Soil vs. Damp Bag
Big Question: Do seeds sprout faster in soil or in a damp plastic bag?
1
Make a Prediction
Which setup do you think will sprout first? Check one box:
Seeds in Soil
Seeds in Damp Bag
Same Speed
Why do you think so?
2
Gather Your Supplies
6 fast-sprouting seeds (beans or radish)
1 clear plastic cup with potting soil
1 resealable plastic bag
1 folded paper towel
Spray bottle or spoon with water
Permanent marker or tape for labels
3
Set Up a Fair Test
Setup A: Soil Cup
Fill the cup about 3/4 full with potting soil.
Plant 3 seeds near the clear edge so you can peek at them, about 1 cm deep.
Add water until the soil is damp, not soggy.
Label the cup: "A - Soil" .
Setup B: Damp Bag
Wet the paper towel and gently squeeze out extra water so it is damp, not dripping.
Place 3 seeds on the towel and fold it gently.
Slide it into the bag and leave a tiny opening for air.
Label the bag: "B - Damp Bag" .
Keep It Fair: Place both Setup A and Setup B side-by-side in the same warm spot. Check moisture daily so neither dries out!
4
7-Day Observation Log
Check both setups at the same time each day
Look closely for changes: Has the seed coat cracked? Do you see a tiny white root? Is a green stem poking up? Record Yes / No and write or draw what you notice.
Day & Date
Setup A: Soil Cup (Sprouted? Notes)
Setup B: Damp Bag (Sprouted? Notes)
Day 1
Date: ______
|
Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 2
Date: ______
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Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 3
Date: ______
|
Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 4
Date: ______
|
Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 5
Date: ______
|
Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 6
Date: ______
|
Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
| Day 7
Date: ______
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Sprouted? ☐ Yes ☐ No
|
Sprouted? ☐ Yes ☐ No
|
5
Compare Your Results
Setup A (Soil Cup)
First sprout on Day: ______
Total seeds sprouted: ___ / 3
Setup B (Damp Bag)
First sprout on Day: ______
Total seeds sprouted: ___ / 3
Which Sprouted Faster?
6
Draw Your Day 7 Sprouts
Sketch one seed from each setup and label the seed coat , root , and stem if you see them.
Setup A: Soil Cup
Setup B: Damp Bag
7
Draw a Conclusion
Was your prediction right? Yes, it matched No, it surprised me
1. What did you observe? Why do you think one setup sprouted faster (or at the same speed)?
2. What do you think your sprouts need next to keep growing into healthy plants?
Sprout Race Slides Multi-Day Science Investigation
Sprout Race:
Soil vs. Damp Bag
Do seeds sprout faster planted in soil or tucked inside a damp paper towel bag? Let's test it and find out!
What Does a Seed Need to Sprout?
Before a tiny plant can grow leaves and reach for the sun, the seed needs three things to wake up:
1. Water
Softens the hard seed coat and wakes up the baby plant inside.
2. Warmth
Tells the seed that winter is over and it is safe to start growing.
3. Air
Gives the growing seed oxygen so it can use its stored food.
Step 1: Predict
Which Setup Will Sprout First?
Setup A: Soil Cup
Planted in damp potting soil
Setup B: Damp Bag
Wrapped in a damp paper towel
Same Speed
Both will sprout on the same day
Share with a partner: Check your choice on your worksheet and explain why you think that setup will win.
Set Up a Fair Test
Setup A: Soil Cup
Fill cup 3/4 with potting soil
Plant 3 seeds near the clear edge
Water until soil is damp, not soggy
Setup B: Damp Bag
Wet paper towel and squeeze out extra
Fold 3 seeds inside the damp towel
Place in bag, leave a small gap for air
Keep It Fair: Use the same kind of seeds and place both setups side-by-side in the same warm spot!
Days 1 to 7: Observe
What Should We Look For Each Day?
1. Swelling
Seeds soak up water, get larger, and their outer coat begins to crack open.
2. Tiny Root
A small white root (the radicle ) pokes out first to anchor and drink water.
3. Green Stem
A shoot pushes upward and tiny green leaves open toward the light.
Day 7 Wrap-Up & Discussion
1. Which setup sprouted first? Did your results match your prediction?
2. Why did that happen? Think about water contact, warmth, and air around the seeds.
3. What happens next? Can a sprout live in a plastic bag forever, or does it need soil now? Why?
Sprout Race Teacher Guide Teacher & Facilitator Guide
Sprout Race: Soil vs. Damp Bag
A multi-day germination investigation for a wide range of learners
Investigation Goals
Identify what seeds need to germinate: water, warmth, and air .
Set up a fair test by controlling seed type, location, and moisture.
Record daily observations and draw an evidence-based conclusion.
Best Seeds to Use
Radish seeds: Fast! Often sprout in 2–4 days.Lima or Pinto beans: Large, easy to see roots (3–6 days).Pea or Sunflower seeds: Sturdy sprouts in 4–7 days.Tip: Soak dried beans in water for 4 hours before Day 1 to speed up sprouting!
7-Day Pacing Plan
Timeline
Est. Time
Key Activities
Day 1: Launch
25–30 min
Use Slides 1–4. Discuss what seeds need, record predictions on Page 1, and build Setup A (Soil) and Setup B (Damp Bag). Record Day 1 baseline.
Days 2–6: Check-In
5–10 min/day
Use Slide 5 as a reminder. Learners inspect both setups at the same time daily, mist dry towels/soil if needed, and log observations on Page 2.
Day 7: plant\
20–25 min
Use Slide 6. Learners compare results, sketch their Day 7 sprouts, and complete the Conclusion questions on Page 3.
Setup & Troubleshooting Tips
Visibility in Soil: Have learners press the soil seeds gently against the clear side of the cup (about 1 cm deep) so they can see root growth without digging up the seeds.Avoid Mold in Bags: Do not zip the plastic bag completely shut—leave a 2–3 cm gap for air circulation, and make sure the paper towel is damp rather than dripping wet.Same Environment: Keep both setups together away from cold drafts or scorching direct heat. Room temperature (20–24°C / 68–75°F) works best.
What Usually Happens? (The Science)
In most classrooms, seeds in the damp bag appear to sprout faster —often 1 to 2 days earlier than in soil. Here is why:
Direct, Even Moisture: A damp paper towel hugs the seed coat evenly, letting the seed absorb water quickly.Visibility: In a bag, you see the tiny white root the moment it cracks the seed coat. In soil, the seed may already have a root underground before a green stem breaks the surface!What Happens After Sprouting? Once the seed's stored food runs out, soil becomes essential for nutrients, root support, and long-term growth.
Common Misconceptions
Misconception: "Seeds need soil and sunlight to sprout."Reality: Most seeds only need water, warmth, and air to germinate because the seed already holds stored food. Sunlight and soil nutrients become critical after leaves appear.
Misconception: "The soil seed didn't grow at all because nothing is above the dirt."Reality: Roots grow downward first! Encourage learners to look through the clear cup walls or gently check at the end of the week.
Supporting a Range of Learners
Younger or Emerging Writers: Allow learners to circle Yes/No and draw quick pictures in the daily log instead of writing full sentences.Older or Advanced Learners: Have them measure root or stem length in millimeters/centimeters each day and calculate the germination rate (% of seeds sprouted).
Sample Student Conclusion Answers
1. What did you observe? Why did one setup sprout faster?
"The seeds in the damp bag sprouted on Day 3, while the soil seeds popped up on Day 5. The damp towel gave the seeds water all around them right away, and we could see the white root as soon as it came out."
2. What do your sprouts need next to keep growing?
"They need to be planted in soil so their roots can hold on and get nutrients, plus sunlight and water so their green leaves can make food."
