There is a website called Postit.com/teachers. You will find some great ideas to use your post-its. Here is one that worked for me.
Read and Find - Post It - Activity
Description:
Before the students arrive, place two post-its on each student's desk. One has a ? on it. The other has a ! on it. As they read the assigned text, they look for something they have a question about and something they learned. The question is writen on the post-it with the ? and the thing they learned is writen on the one with the ! I assigned reading on informational text, namely, rocks and minerals.
During reading, I encourage my students to think of something they have a question about and something they found interested about; something they learned. Students write statements on the post its. Next, the students stick the post-its on a large graphic organizer I have prelabled with questions I have, something I learned. This activity sets a purpose for reading and helps students to focus on the text.
During reading, I encourage my students to think of something they have a question about and something they found interested about; something they learned. Students write statements on the post its. Next, the students stick the post-its on a large graphic organizer I have prelabled with questions I have, something I learned. This activity sets a purpose for reading and helps students to focus on the text.
How it Works
Step 1: Create a class sized graphic organizer that relates to the text you have chosen.
Step 2: Pick two light colored post-its. On one color, print a ? in a corner. On the other color, print a ! in a corner. Place one of each color on each student's desk.
Step 3: Tell the students to read the assignment and find one thing they have a question about and write it on the post-it with the ? They should also find something they learned and write it on the post-it with the !
Step 4: Have the students put their post-its on the graphic organizer.
Step 5: Use the results as a way to guage the students' understanding of the text. Later, ask students to read on to find the answers to the questions.

Another great idea for post its during reading. Easy way to show
that our thinking changes when reading a chapter book.
(Credits to postit.com/teachers....thanks!)
Below is an example anchor chart used in a classroom that uses post-its
Another great idea for post its during reading. Easy way to show
that our thinking changes when reading a chapter book.