Sweet Triangles Worksheet Math Mission
Sweet Triangles
Finding the Area of a Triangle
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Date:
A Sweet Way to Learn Area
Do you love ice cream? A waffle cone looks like a triangle. A triangle is a flat shape with three straight sides. Long ago, we learned how to find the space inside a rectangle. We call this space the area . To find it, we multiply the bottom side times the tall side. Now, we have a neat trick. A triangle is just half of a rectangle! If you cut a square ice cream sandwich in half from corner to corner, you get two triangles. Today, we will learn how to find the area of these sweet triangle shapes.
Full Area
Rectangle
Half Half
Cut in Half
Triangle
Triangle Area
Our Ice Cream Math Words
Base The Bottom
The flat, horizontal line at the top or bottom of our triangle. It is like the wide opening where the ice cream scoop sits.
base
Height The Tallness
How tall the triangle is. It is the straight line from the pointed tip of the cone to the flat base line.
height
Perpendicular Square Corner
When two lines meet to make a perfect square corner, like the corner of a book. The base and the height must meet at a square corner!
90°
Our Triangle Formula
Multiply the base and height, then divide by 2!
Area = (Base × Height) ÷ 2
My Scoop Practice
Show your work and find the area of each shape below!
2 Practice Problems
Problem 1
The Big Waffle Cone
This waffle cone is a triangle. The flat opening at the top is the base . It is 8 inches wide. The distance from the top to the bottom tip is the height . It is 10 inches tall. What is the area?
Write your steps here:
1. Multiply Base × Height: _______ × _______ = _______
2. Divide that answer by 2: _______ ÷ 2 = _______
Base = 8 in
Height = 10 in
SHOW YOUR FINAL WORK:
FINAL ANSWER:
sq. inches
Problem 2
The Triangle Strawberry
We put a paper strawberry decoration on top of our ice cream. This decoration is a triangle. The base at the bottom is 6 centimeters . The height going straight up is 6 centimeters . What is the area?
Write your steps here:
1. Multiply Base × Height: _______ × _______ = _______
2. Divide that answer by 2: _______ ÷ 2 = _______
Base = 6 cm
Height = 6 cm
SHOW YOUR FINAL WORK:
FINAL ANSWER:
sq. cm
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Scoops of Area Teacher Guide Teacher Companion
Scoops of Area Teacher Guide
Lesson Plan, Vocabulary Routines, & Worked Answer Key
Lesson Scope
6th Grade Math
Reading Level: 2nd Grade
Lesson Objective
Students will identify the base and height of a triangle and use the formula Area = (b × h) ÷ 2 to find the area of ice cream-themed triangles.
Reading Accommodations
The student-facing worksheet uses 2nd-grade reading level vocabulary and sentence structures. Read the background passage aloud with students and emphasize bolded terms.
Step-by-Step Lesson Flow
1
Hook & Read Aloud (10 mins): Read the "A Sweet Way to Learn Area" paragraph aloud. Have students hold up an imaginary rectangular ice cream sandwich and gesture "cutting it in half" to show how one rectangle makes two triangles.
2
Vocabulary Choreography (10 mins): Do the actions for key words:Base: Put hands flat out horizontally like a table.Height: Put one hand flat on the desk, the other hand straight up in the air.Perpendicular: Make a "+" sign with your index fingers to show the square corner.
3
Guided Practice (15 mins): Work through Problem 1 together on the board. Point to the physical base (top opening) and the height (vertical dashed line). Remind students that the cone is pointing downwards.
4
Independent Practice & Reflection (15 mins): Let students complete Problem 2 independently. Facilitate the room and encourage them to fill in the "Self-Check" ice cream scoops at the bottom.
Common Student Misconceptions
1. Forgetting to divide by 2:
Students often multiply base × height (e.g. \(8 \times 10 = 80\)) and stop there. Remind them: "A cone is only half of an ice cream sandwich! We must cut it in half!"
2. Misidentifying Height:
Students might measure the slanted sides instead of the perpendicular line. Emphasize: "Look for the little square window box to find the true height!"
Answer Key & Worked Solutions
Problem 1: Waffle Cone
Step 1: Multiply Base × Height
8 in × 10 in = 80
Step 2: Divide by 2
80 ÷ 2 = 40
Final Answer: 40 sq. inches
Cone Calculations Slides Scoops of Area
6th Grade Math
Sweet Triangles!
Finding the area of a triangle with a yummy ice cream cone theme.
🍦 Base 📐 Height 🔳 Perpendicular
🍒
Let's get started! SLIDE 1 OF 4
The Secret Trick
How Triangles Work
A Triangle is Half of a Rectangle!
Think of a flat, square ice cream sandwich. We find its area by multiplying side × side .
If you cut it from corner to corner, you get two perfect triangles !
Our Rule:
To find the area of a triangle, multiply the sides and then divide by 2!
100% Area
Rectangle
Half!
Half!
Two Triangles
Always remember to divide by 2! SLIDE 2 OF 4
The 3 Magic Words
Vocabulary Checklist
1. Base 🍦
The Bottom (or flat top)
This is the flat line where our ice cream scoop sits. We measure it straight across.
BASE
2. Height 📐
How Tall it is
This is the vertical distance from the bottom tip straight up to the flat base line.
HEIGHT
3. Perpendicular 🔳
Square Corner
Our height and base must meet at a perfect square 90° corner. No slanted heights!
90°
Do the physical gestures to remember them! SLIDE 3 OF 4
Let's Try One Together!
Practice Problem
The Waffle Cone Triangle
🍦
Base = 8 inches
Height = 10 inches
The 2 Magic Math Steps:
1
Multiply Base × Height
8 in × 10 in = 80
2
Divide by 2 (Cut in Half!)
80 ÷ 2 = 40
Total Area
40 square inches!
Now, complete Problem 2 on your worksheet! SLIDE 4 OF 4
Cherry On Top Exit Ticket Quick Check
Cherry on Top Exit Ticket
Show your steps and find the total area!
Name:
Date:
The Sweet Cherry Cone
This strawberry cone is a triangle. The top flat line is the base . It is 12 centimeters wide. The height from the top to the tip is 8 centimeters . What is the area?
Step 1: Multiply Base × Height: _______ × _______ = _______
Step 2: Divide that answer by 2: _______ ÷ 2 = _______
Base = 12 cm
Height = 8 cm
Show your final work:
Final Answer:
sq. cm
Rate your understanding:
😀 I understand! 😐 Need more practice 🙁 Confused
CUT HERE FOR TWO EXIT TICKETS
Quick Check
Cherry on Top Exit Ticket
Show your steps and find the total area!
Name:
Date:
The Sweet Cherry Cone
This strawberry cone is a triangle. The top flat line is the base . It is 12 centimeters wide. The height from the top to the tip is 8 centimeters . What is the area?
Step 1: Multiply Base × Height: _______ × _______ = _______
Step 2: Divide that answer by 2: _______ ÷ 2 = _______
Base = 12 cm
Height = 8 cm
Show your final work:
Final Answer:
sq. cm
Rate your understanding:
😀 I understand! 😐 Need more practice 🙁 Confused
