Working with Scale

Resource for Grades 5-8

Working with Scale

Media Type:
Video

Running Time: 5m 41s
Size: 17.1 MB

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Source: WGBH Educational Foundation


Resource Produced by:

WGBH Educational Foundation

Collection Developed by:

WGBH Educational Foundation

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In this video segment from Teaching Earth and Space Science, eighth-grade teacher Mark Goldner discusses the importance of having his students understand scale models and maps He creates a physical model of the sizes and distances of planets in the solar system, and his students make predictions and draw conclusions from the data resulting from the model. Goldner remarks that the activity helps reveal places where the students are having difficulty working with scale.

open Background Essay

A common question for the teaching of science is how to teach scientific inquiry. Setting up a fair experiment, prediction, and observation are components of scientific practices that need to be instilled in students from early years so that they can progress in the sciences in the higher grades.

So how does one relate a scientific skill, approach, or perspective? Real-world objects and visual representations can serve as teaching devices. If used well in the classroom, they may not only bring difficult topics into focus for students, but also teach scientific practices such as prediction-making.

In his Earth and space science class shown in this video, teacher Mark Goldner and his students work together on the scale of the solar system’s celestial bodies. They use familiar objects and the school environment to model the size and distance of things like Earth and the Sun. After charting out this data, they practice scientific practices of making predictions and inferences.

Classroom models can therefore play a role in the teaching of scientific inquiry by providing visual representations for the student’s imagination. They can help students scale large astronomical systems to a digestible size, and more generally afford students the chance to practice translating between visuals, abstract ideas, and data.


open Discussion Questions

You may find it useful to watch this video with a group of your colleagues and then discuss it together.
  • In what ways do you think this activity was effective in helping these students understand the size and distance relationships between planets in the Solar System and the Sun?
  • Discuss the challenges associated with teaching and learning about science topics that deal with phenomena that occurred long ago or far away. What are some of the strategies you employ to teach about scientific phenomena that are not directly observable by students and are outside the realm of their everyday experience?

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