Ms Rascoe’s fourth grade science classes come out to the Jamestown Courtyard "outdoor classroom" to work collaboratively in teams of four students and to practice scientific method while observing a “one-meter square plot”: a One Small Square.
- We frame our inquiry in terms of “health”.
- How can we begin to assess the health of the small square?
- What is the health of the one small square plot?
- What would we do to improve the health of this plot?
- The lesson guides students experientially to an understanding of improving health of an ecosystem through increasing biodiversity.
Also note: although students mark out a meter square area, we will consider what is underground and also in the air above the soil surface.
See Donald Silver's book One Small Square - Backyard for inspiration.
Each team of four students builds a one-meter square with ½ inch plastic pipes.
Each student team locates their meter square within a general area of the courtyard garden. Here are the 6 areas identified on a googlemap
The students observe their plots using senses: look closely, listen, smell and feel too...(We're not tasting things in the garden today though!)
- Can you draw a bird's eye view of your one-meter plot?
- What would a cross-section look like?
- What do you consider to be factors influencing the "health" of your plot?
- Factors include: sun, light, soil, rock, water, air, human interactions, wildlife, plants (abiotic and biotic factors)
- Can you find and identify the plants in the plot?
- Are there any insects and wildlife in your plot today?
- Can you name them?
- Observe the insects and wildlife and describe what they are doing.
- Can you make a hypothesis or an inference about what might be under the soil surface using some of the information on the surface or by exploring carefully?
The students discuss together and diagram and write notes in their science journals, using pencil and colors.
After making observations, students begin to formulate a "health assessment" of the plot and propose design improvements.
- What do we mean by “health” of the garden? We discuss ecosystems, biodiversity, wellness...
- What would you do to measure and improve the health your plot? Consider potential signs of health.
- The students begin to think about introducing plants or other ways they could increase the biodiversity and improve the health of their plot.
Here are some results and ideas for improvement:
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This lesson was 45 minutes long and gave students a quick overview and idea of what they could do for stewardship projects to help create a more healthy environment in the courtyard: to increase biodiversity.
The students are excited today by observing their selected small square plots, and feel empowered by suggesting ways they could contribute to the overall well-being of the courtyard. Students offer to be included in the stewardship and maintenance process of the courtyard, and I note proposals include: to plant seeds and plants, and to weed and water. Students begin to discuss health of the ecosystem in terms of increasing biodiversity.
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Credits and Resources
One Small Square is inspired by "Magic Spots" in The Growing Classroom, p. 238.
Donald Silver: One Small Square - Backyard
One Small Square adaptations
The One Small Square lesson can be adapted for working over several class periods, and for elementary, middle school and high school students to assess for example: the health of a tree and an ecosystem, and to form an introduction to more extensive civic engagement stewardship projects.
For example:
- At Gunston Middle School, I developed materials in Spanish and English for 6th grade students to observe tree health, do site assessments and catalyze stewardship projects.
- At Arlington Traditional School, second grade and fifth grade classes observed their Small Squares over a year (Sept/Oct 2011) and implemented design projects.
- Use the One Small Square lesson as an introduction for more extensive site assessments and audits of your schoolyard and school such as required for the Eco-Schools USA program.
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