This is a powerpoint lesson on "Adding 2-digit Numbers." This can be taught in three separate days. Each day has a warm-up, number talk, strategy, and practice problems. The three strategies are: number lines, expanded form, and standard algorithm.
This no-prep lesson has four days of subtraction strategies. Each day has a warm-up, number talk, instruction, guided practice, independent problem, and self-reflect. Students will learn to use number lines, expanded form, and the standard algorithm.
This can be used as a whole group activity or as a math center. Post the cards around the classroom. Students take their recording sheet to write the number sentences in the correct box.