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I want to share a downloadable template I created for a slope and intercept practice poof book. I made it to give my students practice finding the slope and intercepts of a line that goes through two given points.

I think I’ve done a better job this year of introducing x- and y-intercepts in Algebra 1 than last year.

I led up to the concept by asking students what the word intercept reminded them of. Where two roads cross. Football. There was another answer, but I can’t remember it right now. Then, I drew a coordinate plane on the Smart Board. I asked students for points that would lie on the x-axis. (3, 0). (5, 0). (-1, 0). (52, 0). (79, 0). What do these points all have in common? The second number is always zero. What do we call that second number? Y. Yes, the y-coordinate is always zero if a point is on the x-axis. We repeated the process with naming points on the y-axis.

Next, it was time to take notes in our interactive notebooks. To save a little time, I wrote out the definitions, leaving blanks for my students to fill in. We repeated the same process for y-intercepts.

Next, we made a poof booklet to practice finding the slope, x-intercept, and y-intercept of a line. This is our second poof book of the year. The first poof book we made was for exponent rules. A poof book is made out of a single sheet of letter-sized paper. I have linked to the file to make this booklet at the bottom of this post.

## How to Assemble a Poof Book

Here are step-by-step pictures on how to assemble the book:

Here’s what the template looks like to begin with.

Fold the template in half, hot dog style. The graphs should be on the outside.

Fold in half again, so the front and back covers are showing.

Fold in half one more time. The front cover of your booklet should say “Slope and Intercept Practice.” It should look like a mini-book. We’re not done yet, though.

Unfold your booklet. It should be creased like this:

This time, fold the paper in half, hamburger style. Some of my students insist on calling this taco style because hamburger buns aren’t joined on one edge.

Take your scissors and cut through the fold above the front cover to the crease. Do not cut past the crease or you will end up with two pieces of paper instead of one. Yes, I’ve had students do this.

Unfold the paper, and refold it hot dog style. You should notice that the middle starts to “poof” open. This is good!

This is the hardest part for my students. We want to open up the “poof” and collapse it so it forms the pages of our book.

Now, we have a cute little book that not only looks like a book but opens like a book!

Here is what the first two pages on the inside of the book look like:

I gave students a pair of ordered pairs to graph on each page. Students were tasked with graphing the points, determining the slope of the line, determining the x-intercept of the line, and determining the y-intercept of the line. After doing this with my first period, I learned the importance of using a ruler to connect the two ordered pairs. I specifically picked ordered pairs that would produce a line that had x- and y-intercepts that were integers. But, if the line is not drawn perfectly straight, it often looks like it crosses between two integers.

I projected the pairs of ordered pairs on the board for students to copy down.

Here’s what the poor book looks like when glued in our interactive notebooks. Students were required to finish the booklet as their homework assignment. I like that this can be kept in their notebooks and referenced in the future. The same cannot be said about most of the homework assignments I give.

Final Product:

## Free Download of Slope and Intercept Practice Poof Book

X-Intercept Notes (PDF) (955 downloads )

X-Intercept Notes (Editable Publisher File ZIP) (788 downloads )

Y-Intercept Notes (PDF) (923 downloads )

Y-Intercept Notes (Editable Publisher File ZIP) (686 downloads )

Slope and Intercept Practice Poof Book (PDF) (1099 downloads )

Slope and Intercept Practice Poof Book (Editable Publisher File ZIP) (834 downloads )

## More Activities for Teaching Slope

- Average Rate of Change Self-Checking Question Stack Activity
- Finding Rate of Change from a Graph Hole Punch Activity
- Slope Treasure Hunt Activity
- Calculating Slope and Intercepts Foldable
- Finding Slope Foldable
- Four Types of Slope Graphic Organizer
- Rate of Change Interpreting Graphs Practice
- Rate of Change Graphic Organizer and Practice Problems
- Finding Slope and Intercepts Foldable
- Interpreting Slope and Intercepts Foldable
- Calculating Rate of Change from a Graph Practice Book
- Crow and the Pitcher Activity for Introducing Rate of Change
- Calculating Rate of Change from a Table or Set of Points Practice Book
- The Adventures of Slope Dude Posters
- Slope Dude Says
- Finding Slope from a Table or Set of Points Notes
- Slope Concept Map
- Finding Slope from a Graph Graphic Organizer
- Interpreting Slope from a Graph or Table Practice Book
- WWSDS What Would Slope Dude Say Posters
- Slope Art Assignment
- Four Types of Slope Foldable
- Four Cars Task for Introducing Rate of Change
- Slope and Intercept Practice Poof Book
- Four Types of Slope Name Art Activity
- Rate of Change Graphic Organizer
- Rise Over Run Reminders
- Slope Between Two Points – Around the Room Practice Activity
- Four Types of Slope Pictures
- Slope Foldable
- Slope Tree Method for Teaching 4 Types of Slope

Unknown

Thursday 4th of October 2018

This is amazing for people who struggle with algebra, thank you so much.

Anonymous

Wednesday 8th of March 2017

You are amazing THANK YOU!!!!!!!!!!!

Sarah Carter (@mathequalslove)

Tuesday 18th of April 2017

You're very welcome!

Adina

Friday 19th of June 2015

Poof books are super cool! I've used them with two of my classes-one of them was your exponent rules book-and they loved them! Some of them had slight difficulty with where to cut and how to turn it into a book, and I thought this video illustrated it nicely. Thanks again for always sharing!

https://www.youtube.com/watch?v=KyBvLycibe4&safe=active

Sarah Carter (@mathequalslove)

Monday 22nd of June 2015

Thanks for the link! I think showing this to my students would definitely clear up the inevitable misconceptions of where to cut!

Unknown

Tuesday 30th of December 2014

Something to add to your arsenal...Dinah Zike... https://www.amazon.com/Notebook-Foldables-Spirals-Binders-Composition/dp/1882796276 I just bought this book and found that it is just like her foldables but saves paper, it also has some other/new useful techniques to add to your notebooking. Hope you find it helpful.

Unknown

Tuesday 30th of December 2014

I have made mini books before (i think you call it a proof book), and we always printed, cut and taped them. I love that you used publisher. I am a bit of a computer nerd, but did not even think to use publisher...lol. Thanks! After reading a few math blogs, I am tempted to make one of my own, but I really don't know if I have the time or if my "stuff" would be good enough. P.S. Thanks for all the free files!!