Now that using a protractor is a Common Core skill for 4th grade, here is a little freebie to help your students, (and maybe you too, if it has been a while since you've had to use one!)You get a large version of the poster which can be projected on your interactive white board or printed out poster-sized.
Common Core: Developing Fluency with Number Bracelets
Math Coach's Corner: Developing Fluency w/ Number Bracelets. Concrete practice for combinations of each number from 1-10, which lays the foundation for fluency w/ addition/subtraction facts. • Instructions and labels for making the number bracelets • Instructions for using the bracelets in a variety of ways with suggestions for differentiation • Prompts for using a math journal to record all combinations of the numbers from 1 to 10 • Missing addend equation cards for hands-on practice $