# Functions Unit

Successful Activities

Here are some activities that I may or may not have blogged about, but have proven successful in my precalculus classroom.

“Functions ‘Reversed'” Activity – Many activities and problem sets ask students to find the domain and range of a function. This activity asks students to write functions based on certain domain and range criteria.   PDF Version  Pages Version

“Operations on Functions” Inquiry – It turns out that when you combine functions using different operations you can make predictions on what the functions will looks like based on the “combined functions”. This is especially true when the functions are from different families. This activity asks students to look at the functions as a whole and then in parts and describe how they could predict what the graph would look like based on the partial functions. This takes a topic that can seem dry and pointless and gives it meaning. I heard lots of “Oh that is cool” during this activity. (Made in collaboration with Steve Kelly)  PDF Version    Pages Version

“Composition of Functions” Inquiry – This is very similar to the “Operations on Functions” activity but looks at the graphical representation of composition of functions. PDF Version   Pages Version

“Connecting Zeros, Factors, and Polynomial Division” Activity: This is an activity that is designed to help students see the connection between the zeros of a polynomial function, the factors of the function, and how polynomial division fits into everything. This went over well in class and I had almost complete engagement when students were going through it.  This activity also encourages students make conjectures about repeated zeros.        PDF Version      Pages Version

## 4 thoughts on “Functions Unit”

HI Zach,
I am checking out your site by a recommendation from Dan.
I would love to see your activities on Functions but it is giving me a DropBox Error 404.
Let me know if you can help with that. I have dropbox.
Fun to read a new blog.
Lorrie

• Zach Cresswell says:

Thanks for reading! I can fix that. Which activity is it?

• Rebecca says:

I believe LCoonrad is referring to any of the links above in your functions unit. I got the same error message.

• Zach Cresswell says:

All these links should be fixed now! So sorry about that.