Featured

Main Information

Grade level

8th grade

artifact category

Group Task

Storyline chapter

Chapter 2

scientific practices

Constructing explanations (for science) and designing solutions (for engineering)

Obtaining, communicating, and evaluating information

crosscutting concepts

Patterns

Cause and Effect

Energy and Matter

disciplinary core ideas

PS4.A: Wave Properties

Artifact Description

After discussing how different materials interact with sound waves, students worked in groups to create a graphic organizer for three different ways that waves might interact with a material: be reflected, be absorbed, and or be transmitted. Each part of the organizer included a description and an image for the concept.

Student Thinking

Artifact A illustrates an example for each type of interaction, using crescent shapes to show the directionality of the sound wave as it interacts with an object or surface. Note how this artifact equates a reflected sound with the common idea of an echo.

Artifact B offers more specificity about how the nature of a material impacts how a sound wave interacts with it by taking into account the microscopic organization of particles. The illustrated examples are very similar to those provided in Artifact A; it is noteworthy that the ‘transmission’ example remains abstract while the others are real-world examples.

Artifact C provides a short description, but is unique in its use of visual analogies. For how a sound wave is reflected, this artifact uses the analogy of a basketball bouncing off the ground and backboards. For how a sound wave is transmitted, this artifact uses the analogy of the transmission of sickness through a sneeze.

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3. Wave Interactions - Summary Chart

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