Addition Strategies 5-Week Unit Workbook | Math Skills | Grades 1-3 | No Prep | Ontario + CCSS - 15-lesson structured practice unit Build lasting addition strategies fluency with this structured 5-week workbook. Each week scaffolds difficulty with increasing number ranges, worked examples, format variety, and spiral review - so students build confidence through deliberate daily practice. Designed for Grades 1-3 with Ontario + CCSS alignment. Works as a printed workbook or digital Google Slides a