If you have little ones in the house, this activity is an easy and fun way to teach them about seeds and plant germination.
This project has been around for years, and you can find a great lesson plan done by the Smithsonian HERE.
To germinate bean seeds, you will need:
plastic zipper bags,
and a curious preschooler.
I started by having a conversation with my son about how plants grow. Thanks to Blue’s Clues, he already knew that plants need water, sun, soil, and air to grow.
We talked about how in every seed there is a tiny plant and food to help it grow. This concept might be foreign to preschoolers, in which case, a seed that has been soaked in water overnight can be sliced in two to reveal the inside of the seed.
When a seed first starts to grow, it is called germination. Germination can be done without soil.
The first step in creating a plastic bag “greenhouse” is to wet a folded paper towel. It should hold a fair amount of water, but not be dripping wet.
Slip the paper towel into the baggie. Place one bean seed between the towel and the bag and zip it closed.
The bags need to be in a sunny place, so I found that taping them to a window that gets direct sunlight is a good way to go.
Check the bags each day for progress. If your child is a little older, you could have him chart or journal the progress.
Over time, condensation will build up on the inside of the bag.
After a few days (five for us), the seeds will begin to sprout!
After a few more days, you should be able to see the roots spreading out and the leaves beginning to peek out of the seed coat.
You will need to explain to your preschooler that these seeds are just germinating (starting to grow). Since they are not growing in nutritious soil, eventually they will wither.
Next week, I will be sharing another Gardening with Preschoolers idea as part of The Brassy Apple’s S.O.S. series.