☄ THE CARTOGRAPHER’S CODE | Go Math Grade 4 | Multistep Equations | 4.OA.3

Deep within the Great Library of Alexandria, a sealed chamber has been discovered. Ancient Phoenician merchants encrypted their trade route maps using multistep equations — and only an agent who understands the Order of Operations can crack the codes. This complete lesson bundle puts your students in the role of Temporal Agents of the Order of the Compass Rose and makes learning 4.OA.3 (multistep word problems) a mission they won’t forget.

📖 WHAT IS INCLUDED (3 files):

Mission PowerPoint Presentation — 13 Slides

• Slide 1: Mission title — dramatic branded opening with the Order of the Compass Rose seal

• Slide 2: The Discovery — narrative hook about Phoenician merchants and their encrypted trade maps, including a Keeper Theodora quote for teachers to read aloud

• Slide 3: Mission Objectives — introduces two decryption methods (step-by-step and master equation) and the passport stamp reward

• Slide 4: Gear Check — warm-up reviewing order of operations with partner practice problems

• Slides 5–7: Training Exercises — guided word problems connecting multistep equations to the mission narrative

• Slides 8–11: Independent practice problems and the READ–PLAN–SOLVE–CHECK field guide strategy

• Slide 12: The Dominic Trap — error analysis slide where students spot a code-breaker’s order-of-operations mistake

• Slide 13: The Final Code — exit problem on a sticky note; students who crack it earn the Cartographer’s Seal stamp

• Every slide includes detailed teacher speaker notes with dramatic reading scripts, discussion questions, and instructional tips

Mission Narrative Handout

• A beautifully designed, story-driven mission brief printed and placed on students’ desks at the start of the lesson

• Sets the historical scene: the Great Library of Alexandria, Phoenician traders, encrypted supply ledgers

• Explains both decryption methods (Method I and Method II) in mission language students can read independently

• Includes the “Dominic Trap” warning and the Cartographer’s Seal passport reward

• Designed to be printed single-sided on US Letter paper

Student Math Passport

• Official Temporal Agent credential — every student receives one at the start of the year

• Explorer Information page with fields for name, grade, room, and a photo/sticker space

• Mission Log tracking 12 missions with a stamp/checkbox for each

• Cut-and-fold exit ticket series — students record the mission number, topic, problem, work, answer, and stamp earned

• Print single-sided, cut along gridlines, fold into quarters, stack in order, and staple at the spine

• One passport covers the full year — print once per student

📌 STANDARDS:

• 4.OA.3 — Solve multistep word problems using the four operations; represent the problem using an equation

• MP.2 — Reason abstractly and quantitatively

• MP.4 — Model with mathematics

• MP.7 — Look for and make use of structure (order of operations)

✅ THIS RESOURCE IS GREAT FOR:

• 4th grade classrooms using Go Math (Houghton Mifflin Harcourt) — Lesson 2.12

• Teachers who want to bring storytelling and engagement into math instruction

• Introducing or reviewing multistep equations and order of operations

• A stand-alone lesson that needs no prior knowledge of the Compass Rose narrative

• Homeschool families using Go Math Grade 4

• Gifted learners who need context and challenge alongside the math

📦 WHAT YOU GET:

• 1 PowerPoint file — 13 slides with full speaker notes (Mission 7: The Cartographer’s Code)

• 1 PDF — Mission narrative handout (print one per student)

• 1 PDF — Student Math Passport (print one per student, cut and fold)

• All files print-ready on standard US Letter (8.5 × 11 in.) paper

✨ Love this lesson? The full Cartographer’s Quest curriculum covers all Go Math Grade 4 chapters with the same narrative approach. Search “Cartographer’s Quest Go Math” in my store!