Day 54: Mystery Medium

Thursday, 31 October 2013

Screen Shot 2013-11-01 at 10.40.49 AM

The kids are just learning about refraction (we devoted about 45 minutes the day before). I feel like this problem gets at why Snell’s ibn Sahl’s Law is useful. We play it all CSI-style in class, like they’re solving some kind of big mystery.

What was the warmup in 7th period?

For two of my classes, today was day 2 of refraction. For them, they got this warmup:

Screen Shot 2013-11-01 at 10.43.41 AM

I got the image online rather than draw it myself — immediate problem! Most kids didn’t recognize that these are not the incident and refracted angles. Maybe later I’d like this problem better, but on day 2’s warmup, it’s too much, IMHO.



Leave a Reply

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

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

Google+ photo

You are commenting using your Google+ 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 )


Connecting to %s