- Describe the sprouting process in detail
- Identify the parts of a seed critical to the sprouting process
It’s amazing to think that a single little seed has everything it needs for the initial stage of growth. Each one comes prepacked with its first set of leaves, a little food, a stem, and a root. It’s everything the seed needs to begin the quest to fulfill its destiny.
Prepare for this lesson a week in advance by pre-soaking seeds for 24 hours and then sprouting an assortment of seeds that can be handled and viewed by the students during the active lesson. The sprouts should be in different stages of development, some still not germinated and others developed to the point that the radicle (root), hypocotyl (stem), and cotyledon (seed leaf) are clearly visible.
Tools & Materials
- Printed Germination Timeline images
- Sprouts for display
- Primary leaf
Introduction (10 minutes)
Begin this lesson by explaining the germination process to the Students. Emphasize the requirement that seeds have for the optimal temperature and the presence of moisture. Remind them as well that seeds do not need light in the initial stages of growth. Review the germination timeline with Students either as a printout or on screen.
Activity (20 minutes)
Print the Germination Timeline and cut the images into individual pieces. Have the Students place those images in chronological order and describe what is happening at each stage of development. These images can be laminated to protect them for future use.
Discussion (10 minutes)
What are the most critical times in the process? When the seed first begins to show signs of emergence? Once the food reserves of the seed are depleted and it begins to look for light? How does a young sprout find nourishment at that point?
Assessment (5 minutes)
Use the following questions to assess the Students before and after the lesson. Tally the responses of the group in the Assessment Tracking Log for comparison:
- By a show of hands, how many of you can explain the germination process from seed to seedling?
- Now that you understand the germination process, how many of you could explain the timeline to someone else?
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