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Next Generation Science Standard (NGSS) addressed in this packet:
Grade K: Interdependent Relationships in Ecosystems: Animals, Plants, and the Environment
K-LS1-1: Use observations to describe patterns of what plants and animals need to survive.
K-ESS3-1: Use a model to represent the relationship between the needs of different plants or animals and the places they live.
Grade 2: Interdependent Relationships in Ecosystems
2-LS2-1: Plan and conduct an investigation to determine if plants need sunlight and water to grow.
I love doing this lab with my students! They are always amazed at the teeny tiny plant they find inside of the lima beans!
For this lab you will need a bag of dry lima beans.
To introduce my students to the topic of seeds, I project the 4 slides in this packet onto my classroom whiteboard. We discuss each slide and then I give everyone a dry lima bean and a ruler. We fill out the worksheet “Dry Bean Observations” - make our observations, take measurements, and soak the beans in water overnight. The next day, we observe what happened to the bean and record our wet bean observations. How did the seed change? After making observations and filling out the accompanying worksheet, it is time to carefully open the seeds. Inside, students will see a baby embryonic plant. Hand out magnifying lenses if you have them in your classroom – that little plant has everything it needs in order to start growing – amazing!
Your students will love making the little seed-shaped booklet identifying all the parts of the seed. Patterns included.
Do a fun science experiment with your students- what happens to lima beans soaked in colored water overnight? Worksheet where students record predictions and results as well as photos of my class results included.
After your class has thoroughly examined the interior and exterior of our seeds, grow the beans in soil. Many people put lima beans into Ziploc baggies on damp paper towels to watch them germinate. I do not do this anymore with my students because most of the lima beans turn into smelly, rotten lima beans within 3 days, yuck!!
Instead, we plant directly into see-through cups. We pretend like we are using "magic beans" to grow Jack's Beanstalk. We put a picture of Jack and his beanstalk attached to a straw into the soil (see photo above). To get the cups ready, I use an awl to poke a hole in the bottom of a 9 ounce disposable plastic cup. Fill with potting soil, add 2-3 beans. The plant will be over 5 cm tall within 2 weeks! It's so exciting for the kids to see!! The root system will be evident within 3 weeks. Keep track of the growth of the plant using the worksheet provided.
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Sue from Science for Kids :)