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The Moon’s Phases and the Self Shadow


By: Timothy Young and Mark Guy

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Details

Type of Product:Journal Article
Publication Title:Science and Children
Publication Date:9/1/2008
Pages:6
Grade Level:Elementary School


Description

In this article, the authors present a new way of teaching the phases of the Moon. Through the introduction of a self shadow (an idea of a shadow that is not well-known), they illuminate students’ understanding of the phases of the Moon and help them understand the distinction between the shadows that cause eclipses and the shadows that relate to the phases of the Moon. Then, they follow with two easy-to-do demonstrations that help students further develop their understanding of the reasons behind the patterns of lightness and darkness in the Moon’s phases.

Ideas For Use

To assess student understanding, have students place other 2-D or 3-D shapes in a light source, and then identify the self shadow and the cast shadow for each object. Figure 4, on page 33, is a rubric to evaluate students’ understandings of these concepts.

Additional Info

Science Discipline: (mouse over for full classification)
Earth's rotation
Moon
Sun
Days
Phases of the moon
Intended User Role:Curriculum Supervisor, Elementary-Level Educator, Teacher
Educational Issues:Assessment of students, Classroom management, Curriculum, Inquiry learning, Instructional materials, Teacher content knowledge, Teacher preparation, Teaching strategies

Technical

Resource Format:application/pdf
Size:386 KB
Requirements:Requires Adobe Acrobat Reader


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National Standards Correlation

This resource has 9 correlations with the National Standards.  
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This resource has 9 correlations with the National Standards.  
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  • Earth Science
    • Changes in earth and sky
      • Objects in the sky have patterns of movement.
      • The sun appears to move across the sky in the same way every day, but its path changes slowly over the seasons.
      • The moon moves across the sky on a daily basis much like the sun.
      • The observable shape of the moon changes from day to day in a cycle that lasts about a month.
    • Earth in the solar system
      • The motions of most objects in the solar system explain such phenomena as the day, the year, phases of the moon, and eclipses.
  • Content Standards
    • Quality Teaching
      • Deepens educators’ content knowledge, provides them with research-based instructional strategies to assist students in meeting rigorous academic standards, and prepares them to use various types of classroom assessments appropriately. (NSDC)
  • Teaching Standards
    • Teachers of science plan an inquiry-based science program for their students.
      • Select science content and adapt and design curricula to meet the interests, knowledge, understanding, abilities, and experiences of students.
      • Select teaching and assessment strategies that support the development of student understanding and nurture a community of science learners.
    • Teachers provide students with the time, space, and resources needed to learn science.
      • Create a setting for student work that is flexible and supportive of science inquiry.


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