Precision is imperative in science! Learn how science defines units of measure and how that changed for several units in 2018. A video lesson describes the history behind the definition of the kilogram, and the narrator then explains why it is necessary for this to change and how science plans to do so.

Concepts

kilograms, moles, degrees kelvin, standard units of measurement, the metric system

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Additional Tags

science

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Instructional Ideas

• Have learners make calculations by varying Plank's constant to realize the effect of the variation
• Ask individuals to research the basis for other units of measure

Classroom Considerations

• Requires a solid understanding of the kilogram, ampere, mole, and degree Kelvin

• This video is hosted on YouTube

Pros

• The narrator is passionate about the topic
• Includes authentic images to support the content

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 RST.9-10.7 RST.11-12.7