Area and Perimeter

🔹 What Is It?

• Area tells how much space is inside a shape.
  
  

• Perimeter tells how far it is around the outside of a shape.
  
  

🧩 Clue to Remember

• Area = covering space
  
  

• Perimeter = walking around
  
  

🔹 Example

• Rectangle with length 5 and width 3:
  
  

  • Area = 5 × 3 = 15 square units
    
    

  • Perimeter = 5 + 3 + 5 + 3 = 16 units
    
    

💡 Why It Matters

This helps with tiling floors, fencing yards, or designing anything with size.

🧱 Grade 7 – Surface Area and Volume

Category: 3D Geometry

🔹 What Is It?

• Surface area is the total area of all outer faces of a 3D shape.
  
  

• Volume is the amount of space a 3D object takes up.
  
  

🧩 Clue to Remember

• Surface area = paint the outside
  
  

• Volume = fill the inside
  
  

🔹 Example

• A cube with side length 4:
  
  

  • Surface Area = 6 × (4 × 4) = 96 square units
    
    

  • Volume = 4 × 4 × 4 = 64 cubic units
    
    

💡 Why It Matters

Surface area and volume are key in packaging, storage, and construction — when you need to cover or fill objects.

🔒 Pink Grade Pro Includes:

• Interactive 3D shape rotator
  
  

• Angle estimator game with protractor overlay
  
  

• Drag-to-build perimeter tool
  
  

• Animated cube unfolding
  
  

• Real-life design activities with surface area and volume
  
  

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