01:30Learning
Can you see the grey box? Sensory adaptation explained by Kit Yates #sciencedemo #optical #sensory
The Royal Institution
A report says that US students are spending too much time taking tests. President Obama agrees. The White House has a plan to find a better balance between testing and teaching. Originally published at - http://learningenglish.voanews.com/media/video/are-us-students-taking-too-many-tests/3088094.html
Published 2015-12-10 · Watch on YouTube ↗
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01:30The Royal Institution
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