The Make a Ten to Add strategy can be confusing but can be done, especially when using a very fun game that is sure to motivate your students to want to learn!
The game itself can be adapted to any grade for any subject.
This lesson specifically uses the 2nd grade math standard of being able to add numbers fluently using mental strategies (MACC.2.OA.2.2). As it is it can be used as enrichment for K-1 or intervention and re-teaching for grades 3-5.
It combines Common Core with Marzano's domains, design questions, elements, essential question, learning goal and student growth scale.