Learning doubles math facts can help with number flexibility. After learning how to count and “count on“, doubles may be the next skill to learn.
Origo Education has a nice post about how to introduce and practice doubling facts with students.
First, students look for doubles in nature (see some ideas below).
Next, students can practice doubling in pairs, where one student holds up fingers, the other mirrors, and both try to say the double the quickest.
For students who need more time, working with double dominoes or dominoes sheets can build familiarity with doubles math facts.
A nice free resources for learning math facts can be found HERE from Bill Hanlon
After learning and mastering double facts, then doubles + 1 or doubles – 1 are fairly easy to learn as a next step. Click HERE for video.