Here’s where you got to start 👇 ✨the patterns of adding 1 and 10✨ These are essential for how to add on an open number number. So focus on these mental math skills first. Then I like students to practice using these patterns to add with activities where the jumps are already made, like this puzzle activity shown in the video. And finally, I show students how to make their own jumps to add an a true open number line. I’ve got a blog post sharing exactly how I do this. (It includes my brain hack