This huge list includes all the best books to teach addition and subtraction, as well as free resources to go along with them!
no prep addition games EXCELLENT COURSE OF ACTION FOR TEACHING ADDING 1-10: +0, +1, +2 +10 Doubles facts Make 10 facts “Using 10’s” facts “Using doubles” facts
Rainbow to 10 anchor chart. Great for students learning addition. Also would be great for teaching addition of integers.
How to Teach Addition Without Using Fingers
FREE Math Strategies Addition Subtraction Posters - Whimsy
Make a simple DIY paper plate addition game to help your child practice their addition and even subtraction skills
Math Games: 20+ Addition and Subtraction Games for Elementary. This pin has many different games that can be used in a Kindergarten classroom.
Bookmark this page for a lot of awesome first grade math ideas - this one is all about addition to 20 but there are ideas for almost every concept
Addition Story Templates to Go With Book, If You Were a Plus Sign (from Mrs. Ricca's Kindergarten; free)
Teaching Addition with Popsicle Sticks - you could use any two different colored stuff around the house: straws, strips of colored paper, two different kinds of dried pasta/beans, etc.