Pop! Why does bending your joints in a certain way cause a cracking sound? This fascinating video delves into the synovial fluid and "bubbles" that exist in your in the space between stretched out joints, as well as debunks some popular myths regarding knuckle popping. 

Concepts

joints, bones, vertebrae, anatomy

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Additional Tags

science

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Instructional Ideas

• This would be a great "brain break" the next time you see a student cracking their knuckles/neck/hips/etc.!
• Use this video as an engaging hook or conclusion to a lesson on the different types of joints

Classroom Considerations

• Pupils should have some basic understandings of anatomy, such as the purpose and composition of joints, prior to beginning this video

Pros

• Excellent graphics and animations
• Customize online assessment, discussion questions, and additional resources provided by publisher

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 RST.6-8.7 RST.11-12.7