Day 53: Green Lantern

Wednesday, 30 October 2013

Screen Shot 2013-11-01 at 10.16.55 AM

I introduced refraction today. My opening: “John Stewart / Green Lantern can become invisible. How?”. I offered them two scientifically-plausible scenarios (here and here). We demo’d the first in class:

The kids dismissed baby oil because they understand Green Lantern is visible because light reflects off him. We settled on the second scientifically-plausible invisibility mechanism as the best for him.

After the baby oil / beaker demo, we looked at refraction and then Snell’s Law. I took the opportunity to explain that Willebrord Snel van Royen wasn’t the first to describe refraction. That honor belongs to ibn Sahl, a Persian mathematician in 984 Baghdad.

What was the warmup 7th period?

Screen Shot 2013-11-01 at 10.31.19 AM

Advertisements

One thought on “Day 53: Green Lantern

  1. Pingback: A Reflection on 180+ Days of Blogging | Megan Hayes-Golding

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s