This way students can easily remove their bag and take it to their desk to observe any changes. I’ve found the easiest way to manage the baggies is to clothespin them to a long piece of yarn stapled or tacked to a bulletin board or wall. Add a squirt of hand sanitizer to the paper towels first, and leave the baggie open so air can circulate. Because the seeds can sometimes get moldy, we do two things. Place dry beans between two damp paper towels inside a sandwich baggie or jar. You can germinate any type of seed or bean but observing the stages of germination is easiest to see using large lima beans. This seed dissection video on YouTube gives an up-close look at the parts of a seed. The seed diagram I use is included in this resource. This is the seed’s belly button!Īs students are dissecting their seeds, have them draw what they see and label the parts of the seed. Challenge them to find the hilum, or the tiny scar where the seed was attached to the parent plant. Using a hand lens or magnifying glass (large magnifying glasses are available at the dollar store), have locate and identify the seed coat, plant embryo, and cotyledon. Using their thumbnails, students then carefully split the soaked bean open to reveal the inside and parts of the seed. Next, students compare and measure the sizes of the two beans. Students use a hand lens to observe and compare the wet bean to the dry bean then describe the differences. Set enough beans aside for each student to have a dry bean to use for comparison. Soak enough for each student to have 2-3 beans in case some break or won’t open easily. Soak the lima beans in a bowl of water for 15-20 minutes to soften them. We want students to be familiar with the vocabulary to use and what seed parts they will be looking for when they dissect their seeds. Introduce your students to the parts of a seed and each part’s function by reading books about plants or by projecting a diagram. But have you ever wondered what the inside of a seed looks like? These easy seed science experiments are a great way for 1st, 2nd, and 3rd grade students to explore the parts of a seed and learn their functions as they dissect and label the inside of a seed. Germinating seeds and growing plants is a must-do activity for elementary students learning about the plant life cycle.
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