Adding with 3 Addends LESSON + WORKSHEETS | PRINT + DISTANCE LEARNING | EDITABLEThis Lesson Pack is the EPITOME of EDI (Explicit, Direct, Instruction). It could basically be used during a lesson observation, or any time that you need to give your students a thorough crash course on this skill!Teach your students how to add three numbers in four simple steps with these slides, independent worksheets, and posters!12 different Warm-up Slides with concrete object representation to introduce the conc