Elementary Addition & Subtraction Lesson

I need a complete, ready-to-teach lesson plan that helps elementary students master addition and subtraction. Please structure it around clear learning objectives, engaging hands-on activities, and assessment checkpoints that align with Common Core or equivalent primary-school standards. The plan should guide a 45- to 60-minute class and include extension ideas for early finishers as well as support strategies for learners who may struggle. Feel free to weave in manipulatives, short games, or digital tools you know work well with young learners; I’m open to creative approaches as long as the math focus stays tight on addition and subtraction facts and strategies. Deliverables • Editable lesson plan document (Word or Google Docs) • Printable student worksheets/activities • Brief teacher notes with differentiation tips and answer keys I will review for age-appropriate language, logical lesson flow, and measurable outcomes before final acceptance.