This is a great unit to reinforce the concept of addition facts to 20 to first graders. The pack includes essential posters, five printables, and four centers. If you are using Envision Math these centers support Topic 5.
Common Core Standards-1.OA.1 1.OA.2 1.OA.3 1.OA.6 1.OA.7 1.OA.8
doubles plus 1
doubles plus 2
Fire Tales Story Problems
Three Digit Hike
Making 9 and 10 Puzzle
Envision Common Core, Addition, Math Facts, Centers, Posters, Printables, Common Core