Why Do We Itch?

Our skin is the first line of defense against insects, parasites, and other irritants. How do we defend it? Step inside the science of scratching with a video from an informative playlist. Topics include how itching evolved, what happens inside our bodies when we encounter an itch, and extreme itching situations.

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CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Dig deeper into the science of itch with an interesting article
  • Have viewers create a flow chart of the itching process as they watch

Classroom Considerations

  • Review some anatomical terms, such as neuron and epidermis, with younger viewers before the video begins
Pros

  • Real-life tales add humor and a little grossness to the resource
  • The descriptions of the itching process are perfect for middle and high school-aged scientists
Cons

  • None
Common Core

NGSS