K-6 Science for the Next Generation

Lesson Plans
Natural Selection – Survival of the Fittest

Learning Objectives

  • Understand the concept of species and the slight trait variations within a species.
  • Explain how natural selection favors individuals with advantageous traits for survival and reproduction.
  • Identify examples of trait variations, such as neck length in giraffes, that provide survival advantages.
  • Describe how camouflage can help animals survive by blending into their surroundings.
  • Recognize the importance of advantageous traits in mate selection and passing on genes to future generations.

Introduction and Hook

Begin with a captivating story or scenario about a group of giraffes in the African savanna, highlighting the importance of neck length for survival.

Go to the Lesson

Introduce the concept of natural selection using the example of the peppered moth and its camouflage abilities.

Direct Instruction

Explain the concept of species and trait variations within a species, using giraffes and moths as examples.

Discuss how natural selection favors individuals with advantageous traits, such as longer necks or better camouflage.

Guided Exploration

Watch the video 'Survival of the Fittest' to see real-world examples of how advantageous traits aid in survival.

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Engage students in a discussion about how these traits help in the survival and reproduction of species.

Hands-On Activity

Have students classify various animals and plants based on their traits and discuss which traits might be advantageous in certain environments.

Use the 'Physical Traits for Survival' assessment to identify and describe traits that help organisms survive.

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Independent Practice

Assign students to research a species and identify traits that have evolved due to natural selection.

Encourage students to create a presentation or report on their findings, focusing on how these traits aid in survival.

Check for Understanding

Conduct a class discussion to review key concepts and ensure students understand the role of natural selection in trait evolution.

Use the 'Inheritance and Variation' assessment to evaluate students' understanding of genetic concepts.

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Review and Reflection

Have students reflect on what they learned about natural selection and how it impacts species survival.

Encourage students to think about how these concepts apply to humans and other species they are familiar with.

Assessment and Extension

Administer the 'Inheritance and Traits – Comprehension' assessment to test students' understanding of the lesson.

Try the Quiz
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For further exploration, students can investigate how human activities impact natural selection and trait variations in wildlife.

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