This document contains lesson plans for a 1st grade math chapter covering addition and subtraction within 20. The plans include objectives, vocabulary, activities and assessments for multiple lessons. Some key points:
- Lessons focus on representing and solving addition and subtraction word problems using models.
- Students practice related addition and subtraction facts, using connecting cubes to show relationships.
- Assessments include quick checks of student understanding and mid-chapter checkpoints.
- Differentiation is provided through small group instruction, interventions and enrichment activities based on student performance.