Phase 1: Foundation

Lessons 1–20 · Numbers 0–10, counting, comparing

Phase 2: Counting & Comparing

Lessons 21–40 · Numbers to 20, patterns, intro to +

Phase 3: Addition

Lessons 41–65 · Addition facts to 10, doubles, number bonds

Phase 4: Subtraction

Lessons 66–85 · Subtraction facts to 10, fact families

Phase 5: Place Value

Lessons 86–105 · Tens/ones, counting to 100, +/− within 20

Phase 6: Fluency

Lessons 106–125 · Mental math strategies, two-digit + one-digit

Phase 7: Mastery

Lessons 126–150 · Two-digit +/− with regrouping, word problems

Progress