Make a claim about the merit of a solution to a problem caused when the environment changes and the types of plants and animals that live there may change

Standards Alignment

• 3-LS4-4 primary
  Make a claim about the merit of a solution to a problem caused when the environment changes and the types of plants and animals that live there may change.*

Lesson Overview

In this Grade 3 science lesson, students explore how changes in the environment can affect the types of plants and animals that live in an area. They will investigate a specific environmental change, analyze possible solutions to problems caused by that change, and make claims about the merit of those solutions using evidence. The lesson integrates scientific practices such as asking questions, collecting and analyzing data, developing models, and communicating explanations. Students will engage in hands-on activities and discussions to understand the interdependent relationships in ecosystems and how organisms respond to environmental changes.

Learning Objectives

• Ask questions and define problems related to environmental changes and their effects on plants and animals.
• Plan and conduct investigations or use models to explore how environmental changes affect ecosystems.
• Collect and analyze observations and data about environmental changes and their impact on organisms.
• Develop and use models to represent environmental problems and possible solutions.
• Make a claim about the merit of a solution to a problem caused by an environmental change, supporting the claim with evidence.
• Communicate explanations and solutions clearly and listen respectfully to others' ideas.

Success Criteria

• Students can identify a problem caused by an environmental change affecting plants and animals.
• Students can collect and organize data related to the environmental problem.
• Students can develop a model or prototype of a solution to the problem.
• Students can make a clear claim about the merit of a solution, citing relevant evidence.
• Students can explain their reasoning and listen to others' explanations during discussions.

Prerequisite Knowledge

Students should understand basic concepts of ecosystems, including that plants and animals live in habitats and depend on their environment. They should be familiar with observing and describing living things and their surroundings.

Key Vocabulary

• Environment
• Ecosystem
• Habitat
• Organism
• Environmental Change
• Solution
• Claim
• Evidence
• Model
• Interdependence

Materials and Resources

• Pictures or videos showing an environmental change (e.g., drought, flood, construction)
• Chart paper or whiteboard
• Markers
• Observation tools (hand lenses, notebooks)
• Materials for building simple models or prototypes (e.g., paper, clay, craft sticks)
• Graphic organizer templates (tables, cause-effect charts)

Teacher Preparation

• Prepare images or videos illustrating a specific environmental change and its impact on plants and animals.
• Prepare graphic organizers for data collection and cause-effect relationships.
• Gather materials for model building and ensure safety guidelines are in place.
• Review the NGSS 3-LS4-4 and supporting TEKS standards to align lesson activities.
• Plan discussion questions to guide student thinking about environmental problems and solutions.

Detailed Lesson Notes

Understanding Environmental Changes and Their Effects

Environmental changes are alterations in the natural surroundings that can affect the living things in an area. These changes might include shifts in land features, water availability, temperature, or the presence of food and other organisms. When such changes happen, some plants and animals may survive well, others may struggle, and some might have to move or may die. Understanding these effects helps us see why solutions are needed to help ecosystems remain healthy.

Making Claims About Solutions

A claim is a statement that says whether a solution to a problem is good or not. To make a strong claim, students need to use evidence — information collected from observations, data, or models — to explain why the solution works or does not work. For example, if a solution provides more water to plants during a drought, the claim might be that this solution helps plants survive better. The claim should be clear and supported by facts.

Scientific and Engineering Practices in the Lesson

Students will engage in several scientific practices: asking questions about environmental problems, planning and conducting investigations or using models to explore solutions, collecting and organizing data, and analyzing patterns or cause-effect relationships. They will also use engineering practices by designing and building simple models or prototypes of solutions. These practices help students think like scientists and engineers as they solve real-world problems.

Using Models to Represent Problems and Solutions

Models are simplified representations of real things or systems. In this lesson, students will develop models to show how an environmental change affects plants and animals and how their proposed solution works. Models can be drawings, physical constructions, or diagrams. They help students visualize complex ideas and communicate their understanding. Teachers should guide students to recognize that models have limitations but are useful tools for learning.

Communicating and Evaluating Solutions

Students will share their claims and explanations with classmates, using evidence to support their ideas. Listening actively to others' explanations helps students compare different solutions and understand multiple perspectives. Evaluating solutions involves considering criteria such as effectiveness, feasibility, and impact on the environment. This process encourages critical thinking and respectful scientific discussion.

Worked Examples

Classroom Activity

Work in small groups to ask questions, plan, and create a model or prototype that could help solve the problem caused by the environmental change.

Guided Practice

Independent Practice

1. Foundational: What is an environmental change? Give one example.
2. Developing: Why might some animals have to move to new places when the environment changes?
3. Application: If a forest loses many trees because of a storm, what is one solution people could try to help the animals that live there?
4. Analysis: Look at two solutions to a problem caused by a flood: building a barrier to keep water out and creating a wetland area to absorb water. Which solution might help more plants and animals survive? Explain why.
5. Challenge: A community notices that a nearby river is drying up, affecting fish and plants. They propose two solutions: limiting water use upstream or building a dam. Make a claim about which solution is better and support it with evidence.

Independent Practice Teacher Answer Key

1. 1. An environmental change is when something in nature changes, like less rain or a flood. For example, a drought is an environmental change.
2. 2. Animals might move because their habitat changes and they can no longer find enough food, water, or shelter where they live.
3. 3. One solution could be planting new trees to replace the lost ones so animals have places to live and food to eat.
4. 4. Creating a wetland might help more plants and animals because wetlands provide habitats and absorb water naturally, while a barrier only keeps water out but doesn't support living things.
5. 5. Limiting water use upstream is better because it helps keep more water flowing naturally in the river, supporting fish and plants. Building a dam might change the river's flow and harm ecosystems. Evidence shows natural water flow is important for ecosystem health.

Guiding Questions

• What changes in the environment can cause problems for plants and animals?
• How can we find solutions to help organisms when their environment changes?
• What evidence can we use to decide if a solution is good?
• Why is it important to listen to others' ideas about solutions?

Common Misconceptions

• All environmental changes are bad for all plants and animals; in reality, some organisms may thrive while others struggle.
• A single solution will fix all problems caused by environmental changes; solutions often have advantages and limitations.
• Models are exact copies of real things; models are simplified and have limitations but help us understand complex systems.

Differentiation

Assessment

• Observe student participation in discussions and model building.
• Check graphic organizers for evidence of data collection and analysis.
• Listen to students' claims and explanations for use of evidence.
• Write a short claim about a solution to an environmental problem and explain why it is a good solution.
• Draw a model showing how a solution helps plants or animals after an environmental change.
• Complete a written report describing an environmental change, a problem it causes, a solution, and a claim about the solution's merit.
• Present a group project with a model and explanation of a solution to an environmental problem.

Answer Guide

• What is an environmental change? Give one example.
  Answer: An environmental change is when something in nature changes, like less rain or a flood. For example, a drought is an environmental change.
• Why might some animals have to move to new places when the environment changes?
  Answer: Animals might move because their habitat changes and they can no longer find enough food, water, or shelter where they live.
• If a forest loses many trees because of a storm, what is one solution people could try to help the animals that live there?
  Answer: One solution could be planting new trees to replace the lost ones so animals have places to live and food to eat.
• Look at two solutions to a problem caused by a flood: building a barrier to keep water out and creating a wetland area to absorb water. Which solution might help more plants and animals survive? Explain why.
  Answer: Creating a wetland might help more plants and animals because wetlands provide habitats and absorb water naturally, while a barrier only keeps water out but doesn't support living things.
• A community notices that a nearby river is drying up, affecting fish and plants. They propose two solutions: limiting water use upstream or building a dam. Make a claim about which solution is better and support it with evidence.
  Answer: Limiting water use upstream is better because it helps keep more water flowing naturally in the river, supporting fish and plants. Building a dam might change the river's flow and harm ecosystems. Evidence shows natural water flow is important for ecosystem health.

Real-Life Application

Encourage students to talk with family members about changes they have seen in local environments and discuss possible solutions to help plants and animals.

Homework or Home Connection

• Encourage students to talk with family members about changes they have seen in local environments and discuss possible solutions to help plants and animals.

Lesson Summary

Students learned that environmental changes can cause problems for plants and animals, and that people can design solutions to help. They practiced making claims about the merit of solutions by using evidence from observations and models. Through discussion and model building, students developed skills in scientific and engineering practices and understood the importance of evaluating solutions carefully.

Teacher Notes

Use the exact standards alignment and retrieved-source provenance stored with this enrichment.

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