Includes vs Excludes in Mathematics Posters

I created this set of includes vs excludes posters to help students remember how we show that a number is included or excluded in mathematics.

I actually came up with the idea for these posters the other night when I was having trouble falling asleep.

My mind could only think about school stuff. Shortly before midnight, I decided that I needed to create this set of posters.

Luckily, I had the forethought to email this idea to myself. I’m glad I did because when i woke up I had completely forgotten about this poster idea until I checked my email.

These should be a handy reference for my students when we’re working with inequalities and domain and range.  

I might make a small version for students to keep in their interactive notebooks.