Are your students on the struggle bus when it comes to rounding? By far, every year, my students need extra reinforcement to help them with this difficult concept. I've tried every trick in the book...all the cute rhymes, place value and more. Then I tried the visual concept of a ladder as a vertical number line to help solidify the number sense needed when rounding. I reinforced the idea of climbing up the ladder to the higher number or stepping down the ladder to the lower number once the mid point number was identified. It clicked with my students. My Rounding Ladder templates are my "Go To" tool now when I teach rounding. I can easily project the template I need to guide and model problems. In addition, I copy a blank template on cardstock and laminate as a resuable mat for each student to use as a learning tool.
Give it a try and see if it helps your class! You can get a copy from my TPT store. 
