Capital Code Slides
Case File #101 • Confidential
Grade 5 Grammar Division
Top Secret Investigation
CAPITAL CODE CRACKERS
Master the 5 core rules of capitalization: sentence starters, the pronoun I, common vs. proper nouns, personal titles, and map locations.
Rule Set 1.0
Proofreading & Editing
Special Agent Training Mission
Code Rule #1
Sentence Starters & The Lone Pronoun "I"
A
Every Sentence Begins Fresh
The very first letter of every new sentence is always capitalized. It signals that a complete thought has begun!
the detective found a clue.
The detective found a clue.
B
The Mighty Pronoun "I"
When you refer to yourself with I or its contractions (I'm, I've, I'll), it is never lowercase.
Yesterday, my partner and i searched.
Yesterday, my partner and I searched.
Detective Rule: No matter where the word "I" appears—beginning, middle, or end—it always stands tall as a capital!
Code Rule #2
Common Nouns vs. Proper Nouns
Ask the Detective Question: "Is it general or a specific one-of-a-kind name?"
Common Nouns
General names • Lowercase
- any building or place museum, school, park
- any person or role detective, teacher, author
- any body of water river, ocean, lake
- any pet or animal dog, golden retriever
Proper Nouns
Specific official names • CAPITALIZED
- a specific place Smithsonian Museum
- a specific person Agent Martinez, J.K. Rowling
- a specific body of water Mississippi River
- a specific pet name Sherlock (the dog)
Watch Out: Dog breeds like "golden retriever" or seasons like "autumn" are common nouns—keep them lowercase!
Code Rule #3
Names, Professional Titles & Family Terms
1
Titles Before a Name
Capitalize a professional title only when it comes right before the person's name.
✓ Doctor Watson
✓ Mayor Higgins
✗ The doctor arrived.
2
Family Words
Capitalize words like Mom, Uncle, Grandma when used as their name or with a name.
✓ Uncle Leo called.
✓ I asked Mom for help.
✗ She is my mom.
3
The "My" Trap
If there is a possessive word like my, our, her, his in front, do NOT capitalize!
✓ my uncle
✓ our captain
✗ my Aunt Sarah (Wait!)
✓ my Aunt Sarah (Name!)
The Replacement Trick: Can you swap the family word with a real name like "Sarah"? If yes, capitalize it! ("I told Mom" → "I told Sarah" = Capital!).
Code Rule #4
Places, Streets & Geographic Landmarks
Cities, States & Nations
Every official political territory:
Chicago, Texas, France, Canada
Streets, Roads & Highways
Both the name and the road word:
Elm Street, Lincoln Boulevard, Route 66
Natural Geographic Features
Oceans, mountains, rivers, and canyons:
Pacific Ocean, Rocky Mountains, Lake Erie
Monuments & Buildings
Specific structures and historic parks:
Yellowstone National Park, Statue of Liberty
Compass Directions: Only capitalize directions when they name a specific region, not a direction on a compass.
"drive north" vs. "the South"
Field Challenge
Spot the Capitalization Culprits!
6 Errors Hidden
OFFICIAL REPORT #884
"last tuesday, detective lopez and i traveled to denver to interview mayor johnson. we drove across the river near oak avenue, and aunt claire helped us decode the map."
Sentence Starter: "last" → Last
Titles & Proper Names: "detective lopez" → Detective Lopez
Pronoun & City: "i" → I & "denver" → Denver
Notice: "river" stays lowercase (general noun), but "Oak Avenue" is capitalized (specific street)!
Case Solved!
Mission Debrief
Your 5-Point Capital Checklist
1
First Word
Every sentence always opens with a capital letter.
The...
2
The Word "I"
Always capitalized when referring to yourself.
I, I'm, I'd
3
Proper Nouns
Specific people, companies, and pet names.
Maya, NASA
4
Official Titles
Capitalized directly before a personal name.
Dr. Gomez
5
Places & Maps
Cities, streets, rivers, oceans, and landmarks.
Main St.
Next Task: Open Your Detective Activity Dossier! Apply your code rules to crack the missing capital cases.
Case Dossier Ready
Capital Code Activity Sheet
Case Dossier: Capital Code Crackers
Grade 5 Grammar Division • Official Field Investigation
Case File #101
Agent Name:
Date:
Badge #:
Score: / 25
1 Part 1: Evidence Locker — Common vs. Proper Nouns (6 pts)
Check the type & write proper nouns with correct capitals
| Suspect Noun | Common | Proper | Correct Capitalized Form (if Proper) |
|---|
| 1. pacific ocean | | | |
| 2. police detective | | | |
| 3. dr. sanchez | | | |
| 4. public library | | | |
| 5. rocky mountains | | | |
| 6. aunt elena | | | |
2 Part 2: The Title Trap — Names, Kinship & Positions (4 pts)
Underline the correct option inside brackets
At the briefing, we heard opening remarks from [ mayor adams / Mayor Adams / mayor Adams ] regarding city safety.
Before heading out on the mission, I phoned [ my Aunt / my aunt / My Aunt ] to let her know I would be late.
When the lab results arrived, [ Doctor Watson / doctor Watson / doctor watson ] examined the fingerprint dusting.
Agent Perez asked, "Did [ Dad / dad / DAD ] remember to lock the file cabinet before leaving?"
3 Part 3: Map Room — Cities, Streets & Landmarks (3 pts)
Rewrite each location phrase with correct capitalization
1. Location phrase:
452 magnolia boulevard, atlanta
2. Location phrase:
yellowstone national park in wyoming
3. Location phrase:
crossing the mississippi river
Capital Code Crackers • Student Dossier Turn to Page 2 for Mystery Case Report → Page 1 of 2
Case Dossier #101: Field Report & Writing Task
Agent:
4 Part 4: The Mystery Case Report — Find & Fix the Culprits (6 pts)
Find 6 capitalization errors in the dispatch report
// INCOMING DISPATCH • STATION 4 // DATE: OCTOBER 29
early yesterday morning, officer ramirez and i arrived in boston to investigate a strange occurrence at beacon street. as the rain poured, we realized that i'd lost the secret key near the charles river. thankfully, detective harris contacted grandma to ask for the backup combination, and we secured the evidence vault before noon.
