Plunder Plan Teacher Guide Plunder Plan
Teacher Facilitation Guide
Mission Overview
Students have been recruited as "Swabbies" on Barnaby Blackbeard's ship. To prove their worth and claim a share of the treasure, they must solve four mathematical challenges. Each challenge provides a part of a 4-digit code needed to unlock the final treasure chest.
Subject Focus
Geometry & Perimeter
Multiplication & Division
Fractions
Multi-step Word Problems
Setup Requirements
Printed Challenge Packs (1-4)
Mission Log for each student
Slide Deck for atmosphere
(Optional) A physical lock box
The Hook (Read Aloud)
"Ahoy there, landlubbers! Ye think ye have what it takes to join the crew of the Golden Kraken? Barnaby Blackbeard don't just take any old sailor. He needs mates who are sharp as a cutlass and quick with their sums! The treasure is buried deep on Skull Island, protected by four magical puzzles. Solve 'em all, get the code, and we'll share the gold. Fail, and it's over the side with ye! Ready your pencils... the tide is coming in!"
Captain's Answer Key
Challenge 1: The Navigator's Map
Answers: Shape A: Rectangle, Shape B: Square, Shape C: Parallelogram. The 3rd landmark is an equilateral triangle with sides of 5 miles. Perimeter = 5 + 5 + 5 = 15.
Code Digit #1: 1 (The tens digit of 15)
Challenge 2: Quartermaster's Rations
Answers: 8 x 4 = 32 biscuits total. 45 oranges ÷ 5 pirates = 9 oranges each. Final equation: 7 x 6 = 42.
Code Digit #2: 2 (The ones digit of 42)
Challenge 3: The Broken Compass
Answers: 1/2 is equivalent to 2/4. Missing fractions on number line are 1/3 and 2/3. 3/3 is the whole chest.
Code Digit #3: 2 (The numerator of the equivalent fraction 2/4)
Challenge 4: The Treasure Lock
Answers: 100 - (25 + 35) = 100 - 60 = 40. Mass of large chest = 12 x 3 = 36 kg.
Code Digit #4: 0 (The ones digit of 40)
Final Treasure Code
1 2 2 0
Verify each digit carefully with the teams!
Treasure Hunt Slides A Mathematical Adventure
TREASURE HUNT
Unlock the secrets of Barnaby Blackbeard's lost gold by solving the island's math mysteries!
Your Mission
1
Visit each of the four Challenge Stations across the island.
2
Solve the math problems to reveal a secret digit for each station.
3
Record your digits on your Mission Log .
4
Enter the final 4-digit code to unlock the treasure!
The Tide is Rising!
Ye have exactly 45 minutes before the cave floods and the treasure is lost forever. Work together, check your work, and don't let the sharks get ye!
START YOUR QUEST NOW!
TREASURE FOUND!
Ye've done it! The curse is broken, the chest is open, and the gold is ours! Welcome to the crew, mates!
Pirate Mission Log Worksheet Pirate Mission Log
Crew Member
Record the secret digits from each Challenge Station here!
Digit One
Navigator's Map
Digit Two
Ship Rations
Digit Three
Broken Compass
Digit Four
Chest Lock
Scratch Space / Crew Notes
FINAL CODE: ____ ____ ____ ____
Island Map Challenge Worksheet Challenge Station #1
The Navigator's Map
"Ye can't find the gold if ye can't read the map! Identify the shapes and find the distance around the island's landmarks."
1 Landmark Shapes
Identify the type of quadrilateral for each landmark below.
Shape A
Shape B
Shape C
2 The Island Perimeter
5 mi 5 mi 5 mi
The Secret Grotto is an equilateral triangle. Each side is 5 miles long.
Show your math here:
Total Perimeter:
miles
Unlock the Digit
"The first digit of the code is the TENS DIGIT of the Perimeter ye just found."
Digit #1 =
Quartermaster Rations Challenge Worksheet Challenge Station #2
Ship Rations
"A hungry pirate is a grumpy pirate! Help the Quartermaster divide the biscuits and multiply the oranges."
1 Biscuit Barrels
The cook has 8 barrels. Each barrel has 4 biscuits. Draw an array or equal groups.
Space for your array:
Total Equation
8 × 4 =
2 Orange Scurvy Cure
There are 45 oranges to be shared equally between 5 pirates.
Work space (Draw your groups):
45 ÷ 5 =
3 Cannonball Math
"Solve this final fact for the second digit!"
7 × 6 =
Digit #2
Use the ONES DIGIT.
#2 = ____
Broken Compass Challenge Worksheet Challenge Station #3
The Broken Compass
"The compass is shattered into pieces! Can ye put the fractions back together to find North?"
1 Equivalent Parts
Shade the circles below to show that the fractions are equal.
1 / 2
/ 4
2 Sailing the Number Line
Label the missing fractions. The line is divided into thirds.
0 1
3 The Whole Chest
Which fraction is equal to 1 whole?
1 / 3
3 / 3
2 / 3
Digit #3
Numerator of #1
#3 = ___
Chest Lock Challenge Worksheet Challenge Station #4
The Treasure Lock
"Ye've reached the chest! Solve these final riddles to find the last digit and claim the gold."
1 Gold Doubloon Dilemma
Captain Blackbeard had 100 gold doubloons. He spent 25 doubloons on a parrot and 35 doubloons on a hook. How many doubloons are left?
Step 1: Total Spent
Show your addition here:
Step 2: Remaining Gold
Show your subtraction here:
Final Answer:
doubloons
2 The Heavy Chest
A small treasure chest weighs 12 kilograms. A large chest weighs 3 times as much.
Mass of the large chest?
kg
Claim Your Treasure
"The final digit is the ONES DIGIT of the doubloons left from Problem #1."
Digit #4
____
Return to the Ship! The quest is complete!
Treasure Architect Teacher Guide Treasure Architects
Project Facilitation Guide
Project Summary
In this performance task, students act as "Royal Cartographers" designing a new map of the uncharted "Polygon Isles." They must use specific geometric constraints and calculate the area and perimeter of their creations to ensure the treasure is properly hidden.
Math Skills Applied
Calculating area using unit squares
Calculating perimeter of polygons
Identifying quadrilaterals and triangles
Grid coordinates and orientation
Design Rules
1 Main Island (Irregular, min 20 squares)
1 Square Jungle (Exactly 16 sq units)
1 Rectangular Lagoon (Area of 24)
3 Triangle Mountains (Any size)
Lesson Flow
01
The Hook: King Barnaby needs a new, more difficult map to hide his gold. Show the Map Maker Slides to introduce the challenge.
02
The Rules: Explain the difference between Area (inside) and Perimeter (outside). Hand out rulers and pencils.
03
Design: Students use the Blueprint Worksheet to sketch. Encourage them to use colors for different landmarks.
04
The Survey: Students transfer their map data to the Surveyor's Report and calculate their final mathematical results.
Master Cartographer Rubric
Criteria Ship-Shape (3) Getting There (2) Walk Plank (1) Requirements All required shapes and landmarks are included. Most requirements are met. Missing several required elements. Math Accuracy All area and perimeter calculations are correct. 1-2 calculation errors. Many errors or incomplete work. Creativity Map is colorful, labeled, and easy to read. Map is clear but lacks detail or labels. Map is difficult to read or messy.
Note to Teacher: Consider having students swap maps to peer-review each other's Area and Perimeter calculations before they submit their reports.
Map Maker Slides The Polygon Isles
MAP MAKER PROJECT
"Become a Royal Cartographer and design a treasure map with mathematical precision!"
Map Requirements
Landmarks
1 Main Island (Irregular shape)
1 Rectangular Lagoon
1 Square Jungle
3 Triangle Mountains
Area Rule
Every landmark must have its Area (total squares inside) recorded.
Perimeter Rule
Every landmark must have its Perimeter (total length of outside edges) recorded.
Cartographer's Toolkit
Find the Area
Count the 1-unit squares inside your shape!
4 x 3 = 12 square units
4 units 3 units
Find the Perimeter
Add the lengths of ALL the outside sides!
4 + 3 + 4 + 3 = 14 units
Anchors Aweigh!
1 Sketch your islands on the grid with a pencil first.
2 Check that your shapes are polygons (straight sides).
3 Fill in your Surveyor's Report with the math.
Cartographer Blueprint Worksheet Cartographer's Blueprint
Polygon Isles Design Phase
Cartographer:
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
N S
Polygons Needed
1 Main Island (Irregular)
1 Square Jungle
1 Rectangular Lagoon
Landmarks
3 Triangle Mountains
1 Treasure Mark (X)
"Draw your map using straight lines along the grid. Label every shape!"
Surveyor's Report Worksheet Surveyor's Report
Landmark Area & Perimeter Analysis
Surveyor:
Date:
"Record the dimensions of your islands from the blueprint. Count squares for Area and edges for Perimeter."
Landmark Shape Area Perimeter Main Island Irregular Square Jungle Square Rectangular Lagoon Rectangle
Coordinate Check
Where is your Secret Treasure (X)?
Example: (B, 12)
Critical Thinking
Why did you choose your island's shape?
End of Official Survey Report
Cartographer Warm Up Worksheet Cartographer's Training
Advanced Area & Perimeter Warm-Up
Cartographer:
Date:
Step 1: I Do (The Captain's Examples)
1. Supply Dock
Area: 6 sq units
Perim: 3+2+3+2 = 10 units
2. Shore Fort
Area: (3×1) + (2×1) = 5
Perim: 3+1+2+2+1+3 = 12
Step 2: We Do (Working Together)
3. The Golden Lagoon
AREA:
PERIM:
Work Space:
4. Lookout Tower
AREA:
PERIM:
Work Space:
Step 3: You Do (Independent Challenge)
5. Skull Point
A:
P:
6. Serpent Coast
A:
P:
7. Kraken Maw
A:
P:
© Royal Cartographers Guild Polygon Isles Training Phase
