Use Root's Coding Level 1 blocks to teach a lesson on number lines with basic single-digit addition and/or subtraction.
CCSS Math K-8 Standards
CCSS.MATH.CONTENT.K.OA.A.1
Represent addition and subtraction with objects, fingers, mental images, drawings1, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
CCSS.MATH.CONTENT.1.OA.C.5
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
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Whiteboard Number Line Lesson Plan