Study of Environmental Issues: Deforestation
Lesson 26 of 28
Objective: SWBAT explain the steps humans can take to protect the environment from deforestation.
Inquiry Based Instructional Model
To intertwine scientific knowledge and practices and to empower students to learn through exploration, it is essential for scientific inquiry to be embedded in science education. While there are many types of inquiry-based models, one model that I've grown to appreciate and use is called the FERA Learning Cycle, developed by the National Science Resources Center (NSRC):
A framework for implementation can be found here.
I absolutely love how the Center for Inquiry Science at the Institute for Systems Biology explains that this is "not a locked-step method" but "rather a cyclical process," meaning that some lessons may start off at the focus phase while others may begin at the explore phase.
Finally, an amazing article found at Edudemic.com, How Inquiry-Based Learning Works with STEM, very clearly outlines how inquiry based learning "paves the way for effective learning in science" and supports College and Career Readiness, particularly in the area of STEM career choices.
In this unit, students will first develop an understanding of the biotic and abiotic factors within ecosystems, the characteristics and classification of living organisms, and how plants and animals obtain and use energy to fulfill their needs.
Then, students will delve deeper into the NGSS standards by examining the interdependent relationships within an ecosystem by studying movement of matter between producers, consumers, and decomposers by creating models of food chains and food webs.
At the end of this unit, students will study ways that individual communities can use science ideas to protect the Earth's resources and environment.
Summary of Lesson
Today, I will open the lesson by introducing students to the environmental issue of deforestation by showing a couple videos on this topic. Students will use online resources to further explore deforestation by researching the problem, causes, impacts, and steps humans can take to help protect the environment. At the end of the lesson, students will reflect and apply their new understanding of deforestation by engaging in a discussion with other students.
Next Generation Science Standards
This lesson will support the following NGSS Standard(s):
5-ESS3-1. Obtain and combine information about ways individual communities use science ideas to protect the Earth’s resources and environment.
5-PS3-1. Use models to describe that energy in animals’ food (used for body repair, growth, motion, and to maintain body warmth) was once energy from the sun.
5-LS1-1. Support an argument that plants get the materials they need for growth chiefly from air and water.
5-LS2-1. Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment.
Scientific & Engineering Practices
For this lesson, students are engaged in the following Science & Engineering Practice:
Science & Engineering Practice 7:
Students construct arguments about environmental issues based upon their research findings. Students will also provide and receive critiques form peers within student discussion groups.
To relate ideas across disciplinary content, during this lesson I focus on the following Crosscutting Concept:
Crosscutting Concept 2: Cause and Effect
Students examine cause and effect relationships as they study environmental issues. For example, students will analyze the problem, causes, and impact on environment. They will also determine the steps that humans can take to help solve the problem.
Disciplinary Core Ideas
In addition, this lesson also aligns with the following Disciplinary Core Ideas:
PS3.D: Energy in Chemical Processes and Everyday Life
The energy released [from] food was once energy from the sun that was captured by plants in the chemical process that forms plant matter (from air and water). (5-PS3-1)
LS1.C: Organization for Matter and Energy Flow in Organisms
Food provides animals with the materials they need for body repair and growth and the energy they need to maintain body warmth and for motion. (secondary to 5-PS3-1)
Plants acquire their material for growth chiefly from air and water. (5-LS1-1)
LS2.A: Interdependent Relationships in Ecosystems
The food of almost any kind of animal can be §traced back to plants. Organisms are related in food webs in which some animals eat plants for food and other animals eat the animals that eat plants. Some organisms, such as fungi and bacteria, break down dead organisms (both plants or plants parts and animals) and therefore operate as “decomposers.” Decomposition eventually restores (recycles) some materials back to the soil. Organisms can survive only in environments in which their particular needs are met. A healthy ecosystem is one in which multiple species of different types are each able to meet their needs in a relatively stable web of life. Newly introduced species can damage the balance of an ecosystem. (5-LS2-1)
LS2.B: Cycles of Matter and Energy Transfer in Ecosystems
Matter cycles between the air and soil and among plants, animals, and microbes as these organisms live and die. Organisms obtain gases, and water, from the environment, and release waste matter (gas, liquid, or solid) back into the environment. (5-LS2-1)
To add depth to student understanding, when I can, I'll often integrate ELA standards with science lessons. Today, students will work on meeting CCSS.ELA-LITERACY.RI.5.7: Draw on information from multiple print or digital sources, demonstrating the ability to locate an answer to a question quickly or to solve a problem efficiently. In this lesson, students will be using multiple resources to locate key information involving an environmental issue.
Choosing Science Teams
With science, it is often difficult to find a balance between providing students with as many hands-on experiences as possible, having plenty of science materials, and offering students a collaborative setting to solve problems. Any time groups have four or more students, the opportunities for individual students to speak and take part in the exploration process decreases. With groups of two, I often struggle to find enough science materials to go around. So this year, I chose to place students in teams of two or three! Picking science teams is always easy as I already have students placed in desk groups based upon behavior, abilities, and communication skills. Each desk group has about six kids, so I simply divide this larger group in half or thirds.
Gathering Supplies & Assigning Roles
To encourage a smooth running classroom, I ask students to decide who is a 1, 2, or 3 in their groups of three students (without talking). In no time, each student has a number in the air. I'll then ask the "threes" to get certain supplies, "ones" to grab their computers, and "twos" to hand out papers (or whatever is needed for the lesson). This management strategy has proven to be effective when cleaning up and returning supplies as well!
Overview of Lessons on Environmental Issues
During this block of four lessons on environmental issues, students create a big book titled, "How Humans can Help the Environment." On each page of the book, students record research on four different types of environmental issues on Earth, including overfishing, deforestation, global warming, and water pollution. Today's lesson focuses on deforestation.
To create a big book for each student, I stapled three sheets of 11 x 17 paper together so that students would have a book cover and four pages of research. Here are a few examples of what finished Big Books will look like at the end of this four-day block of lessons:
Lesson Introduction & Goal
I introduce today's learning goal: I can explain the steps humans can take to protect the environment.
Yesterday, you all did an amazing job researching overfishing! Did anyone go home and talk to your families about overfishing? Many students raise their hands! Today, we are going to move on to the next environmental issues that you'll be studying, deforestation. Turn and talk: What do you think deforestation means? After a minute or two, I ring a bell to bring students back together. The class agrees that deforestation is when trees are cut down.
Turn and Talk: Why do you think deforestation is a problem? What's wrong with cutting down trees? After some discussion time, one student points out, "Trees are plants and plants produce oxygen for animals." Another student chimes in, "Yeah, and if we cut down trees, this could mean that animals don't have enough oxygen to live." Other students are concerned about the animals living in the forested regions and the impact deforestation might have on food chains.
Teacher Note: Knowing how heavy and overwhelming many environmental issues (such as global warming) can be, I continually remind students of the importance of having a positive and hopeful attitude when learning about problems in our global environments. The good news is... there are steps human can take to help solve all of the environmental issues that we will discuss.
Creating a Template for Note-Taking
I show students how to create a graphic organizer on the next page in their big books by projecting the following template: Environmental Issue Page Template. For consistency, students use the same template for organizing their research on each of the four environmental issues that they study during this 4-day lesson block of time. Students then write Deforestation as the title of the environmental issue that they will be exploring today.
I want to inspire interest in today's lesson and capitalize on student curiosity, so I start by showing two videos on deforestation: The Forest & The People and Reforestation: Impact on Climate. I stop the first video, The Forest & The People, at 2:06 minutes as the second half of the video does not focus on deforestation.
By kicking off today's lesson with these videos, students are immediately provided with background knowledge that inspires students to ask questions and to take as many notes as possible on this environmental issue!
Throughout the videos, I pause for students to discuss key points. The goal is to encourage activate listening and to help students connect this environmental issue with their own lives. Students also identify relevant details that help explain either the problem, causes, impact on the environment, or steps to protect the environment. They eagerly take bulleted notes on the Deforestation page of their big books!
To model this note-taking process, I record some student ideas on my teacher example during this time: Deforestation Notes on Teacher's Example. (I toggle back and forth between projecting the video and projecting the teacher model.)
I make sure these are student generated notes by continually asking: How do you want to word that? What is most important? Where might that fact go on our graphic organizer? I also want to integrate ELA standards by modeling correct grammar and spelling.
Teacher Note: Looking back, I wished we had more purposefully tried to gather a few notes under each of the headings on the graphic organizer page (problem, cause, impacts, steps to protect) instead of ending up with so many class notes under "Impact on the Environment."
Key Points from Videos
Here are a few key points from the videos:
- Deforestation disturbs the ecosystem as animals need a place to live.
- Trees provide humans and other animals with oxygen.
- When trees are cut down, soil can erode away.
- Trees use carbon dioxide during photosynthesis. If trees are cut down, then carbon dioxide increases.
- Humans can take action by planting trees.
Now that students have some background knowledge on deforestation, I provide students with the opportunity to work in teams of two to continue their research.
I ask each student team to silently figure out "who is #1 and who is #2." When they are ready, students hold up a one or two on their hand in their air. I then ask #2 students to get a laptop computer. Sometimes when students decide which partner will get a computer, valuable time is wasted!
By only having one computer between two students, each pair of students is able to fit their big books and the computer on two desks. Sharing one computer also encourages students to collaborate and discuss. Here's an example of what students eagerly leaning in together to research information: Students Researching Together.
Prior to the lesson, I emailed the following online resources to students for their research today. Again, the simple action of providing resource links helps make the student research process more efficient and productive. We've all seen students take the entire research time looking for a credible and interesting resource!
Monitoring Student Understanding
Once students begin working, I conference with every group. My goal is to support students by asking guiding questions (listed below). I also want to encourage students to engage in Science & Engineering Practice 7: Engaging in Argument from Evidence.
- What patterns have you noticed?
- Why do you suppose ____?
- What have you found so far?
- Has your thinking changed?
- What evidence do you have?
- How did you decide _____?
- What conclusion can you draw about ____?
- What do you think ____ means?
During this conference, What Does Urban Mean?, I encourage the students to really think about what they are taking notes on by asking them what urban means. Sometimes students might write down, "Land is cleared for farming, ranching, and urban use" without making the connection between "urban use" and clearing land for housing and commercial developments, along with schools!
Here, Balancing Human Needs with Protecting Trees, these students discuss how human needs connect with deforestation. I love listening to one of the students point out that paper can be reused for in compost bins! I then encourage them to think about how reusing paper helps humans avoid the need to cut down more trees.
Here a few examples of student work during this time. When looking through student work, I'm impressed with the number of students paying closer attention than ever to spelling and neatness. Students are very proud of their big books and they seem to be striving to make them look as professional as possible!
Reflect & Apply
Now that students have built meaning and understanding by observing, questioning, and exploring, it is important to provide students with the opportunity to share their findings. For this reason, I invite students to participate in a conversation with a Discussion Group.
Yesterday, you all did a great job participating in a thoughtful conversation in your discussion groups! Today, you will be meeting with the same group in the same spot to discuss deforestation. Remember, your goal isn't to just share important facts about deforestation, but to also share your thinking. To help you during this time, I please use some of the discussion prompts on the board: Discussion Prompts!
To encourage a thoughtful conversation, I also ask students to take turns sharing one fact at a time. After students share a fact, the other students in the group share their thoughts about the fact.
Prior to today's lesson, I created a list of discussion groups by placing students in groups of three students. I took particular care to make sure students are matched with new partners (rather than placing them with their research partners). Students will continue to meet with the same groups throughout the 4-lesson block on environmental issues.
I take every opportunity possible to listen to student thinking and to take part in conversations. This is one of the most powerful ways to not only encourage higher level thinking, but to also identify common misconceptions. Here, Student Discussion on Deforestation, a group discusses some action steps humans can take to help protect the environment form deforestation, such as planting trees, recycling, and building roads around forests. I love how one student points out, "You can't go back and not cut down the tree."