Doubles facts are perfect for early age number sense and math fluency. This includes doubles facts 1+1, 2+2, 3+3, 4+4 and 5+5. This lesson allows for a focus on even and odds and why doubles facts always produce an even number. I use this as a handout for my kindergarteners to have laminated in their cubby. This along with the higher doubles facts. These facts help with decomposing large amounts and finding friendly numbers. Also can use as a poster in the classroom.