How Do Seeds Grow?
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This experiment uses 3 samples to examine the growth of seeds. I always recommend that the adult leading the experiment, attempt it on their own before doing it with a group of children.
What you need:
- three seeds for each child -- corn, bean and radish
- they are large seeds with different shapes and colors
- they have different types of leaves/growth when they start
- they all germinate fairly quickly.
- 8 1/2 x 11 inch (ish) piece of cardstock or light cardboard
- ziploc or plastic lunch bag
- paper towel
- 2 to 4 weeks of experiment time
- Optional: Magnifying glass
- Optional: Seed information sheet
- Optional: Label the Seed Growth Worksheet
- Optional: Seed Growth Printable Observation Sheets
- You can fill in these sheets daily, when something interesting happens or weekly (it's up to you).
- Make sure you complete a sheet when you first put the seeds in (making observations about what the seed coats look like, feel like, etc).
- Optional: Plant Growth color and label page (label the roots, leaves, stem, flower on the page)
Some seeds have a pinkish colored poison covering them so that insects don't get to them. Do not use seeds with this coating.
Directions - Preparation:
- Fold the paper towel in half and crease. Unfold. (you can double your paper towel to make it a bit sturdier if you like)
- Poke three very small small holes, equally spaced, along the fold of the paper towel (we used a sharp pencil to do this)
- Place the seeds over top of the holes (one over each hole).
- Fold the paper towel back up and staple up the side (to make a pouch).
- Label the top of the paper towel (bean, corn and radish)
- Carefully place the paper towel (fold side down, so the seeds don't fall out) into the ziploc bag.
- Tape the ziploc bag onto the piece of card stock, leaving the top open. Tape as firmly as possible.
- Pour a small amount of water into the ziplock bag (the paper towel should end up damp) Do not close the bag
- Hang your experiment on the wall in a bright location
Directions - Maintenance:
- Each morning, check the experiment. Pour more water in to keep the paper towel moist.
- Peek inside the ziploc bag/paper towel to see what the seed is doing
- The seed should break open. The roots should grow down through the small hole you poked in the paper towel.