Boundary Bay Slides Boundary Bay Review
Area
The space inside a shape.
Length × Width
Measured in square units!
Perimeter
The distance around a shape.
Side + Side + Side + Side
Add up all the edges!
Sandcastle Blueprints
Blueprint A: The Watchtower
8 ft 5 ft
Area: ________ sq ft
Perimeter: ________ ft
Blueprint B: The Courtyard
6 ft 6 ft
Area: ________ sq ft
Perimeter: ________ ft
🏖️ Challenge: If a sandcastle has an area of 24, what could the dimensions be?
Island Perimeter Board Game Island Perimeter Pursuit
A Math Adventure Game
Name: ________________________
Date: _________________________
How to Play
Players start at the Sandcastle Entry .
Roll a die and move that many spaces.
Calculate the Area or Perimeter of the shape on your space.
If correct, stay there! If incorrect, move back 1 space.
First to the Treasure Chest wins!
1 Die
Game Piece
Scratch Paper
START
Find Perimeter:
Find Area:
Splash Zone!
Find Perimeter:
Find Area:
Heat Wave!
Find Perimeter:
Find Area:
Roll Again!
Find Perimeter:
Find Area:
Island Shortcut!
Find Perimeter:
Find Area:
Anchor Drop!
Find Perimeter:
Find Area:
Swim Ahead!
FINISH
Keep your scratch paper to show your math! Remember: Perimeter is the fence, Area is the grass.
Multiplication Mosaic Slides Multiplication Mosaic
Multiplication
Groups of equal size.
Factor × Factor = Product
Division
Sharing into equal groups.
Total ÷ Groups = Size
Beach Fact Fluency
5 × 4 = ____
8 × 3 = ____
7 × 6 = ____
9 × 5 = ____
20 ÷ 4 = ____
24 ÷ 3 = ____
42 ÷ 6 = ____
45 ÷ 9 = ____
💡 Fact Family Secret: If you know 5 × 4 = 20, you also know 20 ÷ 4 = 5!
Tropical Color by Number Tropical Math Mosaic
Multiplication & Division Color-by-Number
Name: ____________________
Date: _____________________
Color Key
12 = Light Blue
18 = Yellow
24 = Orange
36 = Dark Teal
42 = Red/Brown
48 = Dark Blue
5 = Sand/Tan
9 = Green
4 × 3
36 ÷ 3
2 × 6
60 ÷ 5
3 × 4
24 ÷ 2
48 ÷ 4
9 × 2
6 × 3
18 × 1
54 ÷ 3
12 ÷ 1
4 × 9
72 ÷ 2
6 × 6
12 × 3
108 ÷ 3
36 ÷ 1
8 × 6
12 × 4
16 × 3
96 ÷ 2
4 × 12
48 ÷ 1
25 ÷ 5
50 ÷ 10
5 × 1
45 ÷ 5
27 ÷ 3
18 ÷ 2
6 × 7
42 ÷ 1
21 × 2
8 × 3
12 × 2
48 ÷ 2
COASTAL CALCULATOR TIPS:
Check your work by using the opposite operation! (Example: If 36 ÷ 3 = 12, then 12 × 3 = 36)
Rounding Reef Slides Rounding Reef
Round to Tens
Look at the ones place!
0, 1, 2, 3, 4 → Round DOWN
5, 6, 7, 8, 9 → Round UP
Round to Hundreds
Look at the tens place!
0-49 → Round DOWN
50-99 → Round UP
Seashell Sorting
43
Round to Ten → ____
87
Round to Ten → ____
265
Round to Hun → ____
742
Round to Hun → ____
🌊 Rounding Wave Riddle:
I am between 50 and 60. When rounded to the nearest ten, I am 60. What could I be?
Seashell Match Game Seashell Match Game
Rounding to Tens and Hundreds
Instructions for Teachers
Cut out the 24 cards on the following pages.
Shuffle the cards and place them face down in a grid.
Students take turns flipping two cards.
A match is made when a Number Card matches its Rounded Value Card .
The player with the most matches at the end wins!
Rounding to Tens Set
43 → 40
87 → 90
12 → 10
55 → 60
94 → 90
26 → 30
Rounding to Hundreds Set
142 → 100
678 → 700
350 → 400
921 → 900
415 → 400
889 → 900
43
Rounded Ten
40
87
Rounded Ten
90
12
Rounded Ten
10
55
Rounded Ten
60
26
142
Rounded Hun
100
678
Rounded Hun
700
350
Rounded Hun
400
921
Rounded Hun
900
889
Sun-Drenched Sums Slides Sun-Drenched Sums
Addition Strategies
Line up the place values!
Regroup (carry) to the left.
Start from the ones place.
Subtraction Strategies
Line up the place values!
Borrow (regroup) from neighbors.
More on top? No need to stop!
The Sandbox Solve
458 + 273 = ?
Work space for regrouping...
821 - 356 = ?
Watch out for the borrowing!
🏖️ Quick Check: Use addition to check your subtraction!
Treasure Trek Worksheet Treasure Trek Cards
Cut these out and hide them around the room!
#1
482 + 315
#2
756 - 423
#3
294 + 581
#4
943 - 628
#5
157 + 668
#6
810 - 245
Treasure Trek Recording Sheet
Solve each problem as you find the cards!
Name: ____________________
Date: _____________________
#1: Shell Surprise
#2: Pail Problem
#3: Island Addition
#4: Sunny Subtraction
#5: Wave Watcher
#6: Fin Fact
Main Idea Slides Main Idea Messages
What is the Main Idea?
The Main Idea is what the text is mostly about. Think of it like the "big umbrella" that covers everything!
Supporting Details
These are facts or examples that prove or explain the main idea.
Details are the waves that make up the whole ocean!
Reading Challenge
Coastal Travelers
Sea turtles are amazing swimmers that travel thousands of miles. They have large flippers that help them glide through the water. Their hard shells protect them from predators as they move across the ocean floor. Most sea turtles return to the same beach where they were born to lay their eggs.
What is the Main Idea?
A) Sea turtles lay eggs on the beach.
B) Sea turtles are amazing ocean animals with special features.
C) Some turtles have shells that are very hard.
Message Bottle Match Activity Message in a Bottle
Main Idea & Supporting Detail Match
Name: ____________________
Date: _____________________
Directions:
Read each "Message" from the beach. Then, look at the "Main Idea Bottles" below. Write the Bottle Number that best matches the message in the box provided.
Message A
Crabs spend a lot of time searching for food. They often eat small fish, snails, and even pieces of seaweed. Some crabs use their strong claws to crack open shells and find a tasty snack inside. They are very active during low tide.
Match Bottle #:
Message B
Hermit crabs don't grow their own shells. Instead, they find empty snail shells to live in. As the hermit crab grows bigger, it must leave its old shell and find a new, larger one. It is important for them to find a shell that fits just right!
Match Bottle #:
Message C
Life in a tide pool is very difficult because the water is always changing. When the tide goes out, animals are trapped in small puddles of water. They have to survive the hot sun and keep away from hungry birds until the tide comes back in.
Match Bottle #:
Message D
Beaches are constantly changing because of wind and water. Waves crash against the shore and pull sand back into the ocean. Over time, the wind blows the dry sand into large hills called dunes. A beach never looks exactly the same for long!
Match Bottle #:
Bottle #1
Nature reshapes the coastline.
Bottle #2
Crabs have many ways to find food.
Bottle #3
Tide pools are tough environments.
Bottle #4
Crabs use recycled homes for shelter.
Context Clue Slides Context Clue Cove
Be a Word Detective!
Context Clues are the words around an unknown word that help you figure out its meaning.
Synonym
A word that means the SAME.
Antonym
A word that means OPPOSITE.
Example
A list of items that explain it.
Definition
The meaning is written right there!
Detectives at the Shore
"The water was so pellucid that we could see every pebble and tiny fish swimming along the sandy bottom."
What does PELLUCID mean?
A) Very deep and cold
B) Clear enough to see through
C) Filled with colorful plants
Which clue helped you? (Synonym, Antonym, Example, or Definition?)
Context Clue Cove Game Context Clue Cove
Vocabulary Board Game
Name: ____________________
Date: _____________________
How to Win
Roll a die and move your piece.
Read the sentence on your space.
Define the BOLD word using context clues.
If you are correct, stay! If not, go back 1.
Look for Synonyms , Antonyms , or Examples !
Don't let unknown words sink your ship!
START
The lifeguard warned us about the hazardous waves, which were very dangerous for swimmers.
The sand was scorching , unlike the cool water at the edge of the shore.
Smooth Sailing!
We found a multitude of shells, including scallops, conchs, and clams.
The sea air was fragrant ; it smelled like salt and fresh ocean breeze.
The tiny crab was miniscule , making it almost impossible to spot in the sand.
Sunburn!
He was hesitant to jump in, but after a minute, he dove right into the water.
The tranquil ocean was so calm and peaceful this morning.
Riptide!
The waves eroded the sand, slowly washing away the tall dunes over time.
I was famished after swimming, so I ate my whole sandwich in two bites!
The pirate's map was ancient , looking like it was hundreds of years old.
The seagull was persistent ; it wouldn't stop begging until I shared a fry.
The cave was murky , so we couldn't see anything in the dark, cloudy water.
The dolphin's skin was sleek and smooth to the touch.
Tropical Oasis!
We saw a glimmering object that sparkled under the bright sun.
FINISH
Character Trait Slides Character Trait Crabs
Outside Traits
Physical Appearance
What you can SEE:
Hair color, height, clothing.
"He wore a blue swimsuit."
"She had curly hair."
Inside Traits
Personality & Feelings
What they THINK/DO:
Kind, brave, greedy, nervous.
"He shared his sand toys." (Generous)
"She explored the dark cave." (Brave)
Meet Barnaby the Bird
Outside: Grey feathers, yellow beak, orange feet.
"Barnaby the Seagull sat patiently by the cooler. When a small child dropped a piece of sandwich, Barnaby didn't dive for it. Instead, he chirped to alert the child’s mom so the trash wouldn't blow into the ocean. He always made sure the beach stayed clean."
Which INSIDE trait describes Barnaby?
Greedy Responsible Lazy
Character Trait Sort Activity Character Crab Trait Sort
Internal vs. External Traits
Name: ____________________
Date: _____________________
Directions:
Read the character descriptions below. For each trait listed in the "Shell Box", decide if it is an External (Outside) trait or an Internal (Inside) trait. Write it in the correct bucket!
SURFER SAM
"Sam has long blonde hair and wears a bright neon green wetsuit. Even though the waves were massive, Sam paddled out with a determined smile. When a younger surfer struggled, Sam stopped his own ride to help them get back to the board. He is always polite to the other beachgoers."
Trait Word Bank
Long blonde hair
Kind-hearted
Neon green wetsuit
Determined
Polite
Tall and thin
Brave
Carries a surfboard
External Traits
Internal Traits Fact and Opinion Slides Fact vs. Opinion
Fact
Something that can be PROVEN true or false.
Clues:
Statistics and dates.
Science facts.
"The sun is hot."
Opinion
A FEELING or belief. It cannot be proven.
Clues:
"Best", "worst", "beautiful".
"I think", "I believe".
"Beaches are the best."
Sort the Statements
Seawater contains salt. FACT
Building sandcastles is fun. OPINION
Blueberries are the best snack. OPINION
Dolphins are mammals. FACT
🌊 Strategy: If you can look it up in a book, it's a FACT!
Seaside Statement Sort Worksheet Seaside Statement Sort
Fact vs. Opinion Challenge
Name: ____________________
Date: _____________________
Directions:
Read each statement below. Determine if it is a Fact (can be proven) or an Opinion (a feeling). Write "Fact" or "Opinion" on the line next to each beach ball!
1. The ocean covers more than 70% of the Earth's surface.
____________________
2. Swimming in the ocean is the most fun thing to do on vacation.
____________________
3. Some species of sharks have hundreds of teeth.
____________________
4. Everyone should spend their summer at the beach.
____________________
5. The sun is a star that provides light and heat to Earth.
____________________
6. Collecting seashells is the best hobby for kids.
____________________
7. High tide and low tide are caused by the moon's gravity.
____________________
8. Coconut water tastes much better than regular water.
____________________
Write Your Own!
Create one beach fact and one beach opinion below.
Fact:
Opinion:
