Polygonal Numbers

I’m finishing up arithmetic series in my class. I wanted to give my kids a challenge problem. I let them choose their groups, and handed this out at the top of class.

I told each group that they could ask me for one big hint along the way to help them out.

Only one of the five groups asked for the hint. Even when time was running out. That meant — to me — that they were interested in solving the problem and felt like they had the means to do it. That was my one good thing. My kids have perseverance!

What I loved was that one of the five groups did solve it — and other groups I think both were dissuaded (awww, they actually figured it out) but also inspired (if they could do it, this isn’t impossible!). The other groups were getting somewhere. Because they were really engaged and talking through things, I decided to let them continue in class tomorrow — even though that throws everything I had planned off!

I am going to do this activity again in my second precalc class in 20 minutes. Fingers crossed it goes well!

Advertisements

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