Thread Academy

Symbols and Keys

Learn how simple pictures and a key help readers understand any map.

  • Define and explain Symbols and Keys in your own words
  • Use key terms such as symbol accurately
  • Apply what you have learned to new examples and questions
  • Avoid the common mistakes learners make with this topic

This lesson focuses on Symbols and Keys: learn how simple pictures and a key help readers understand any map.

Definition: Symbols and Keys

Learn how simple pictures and a key help readers understand any map.

Key ideas

Plans show places from above

A plan is a simple map of a small area, such as a classroom. Because it is drawn from directly above, things look different from usual: a table becomes a rectangle and a door becomes a gap in a wall. Drawing plans helps you notice where things are in relation to each other.

Symbols keep maps tidy

Writing the word 'playground' across a map would cover it up, so map-makers use small symbols instead. The key tells the reader what each symbol means. The same symbol can be reused many times — one tree symbol can mark every tree in a park.

Key term — symbol: A small picture on a map that stands for something real, such as a tree, a church or a car park.

Worked example: Symbols and Keys

Why do maps use symbols?

Symbols save space and keep the map clear and easy to read.

Answer: Symbols save space and keep the map clear and easy to read.

Common mistakes
  • Thinking the symbol is the real size A tree symbol on a map is far smaller than a real tree. Symbols are not drawn to size; they just mark positions.
  • Forgetting to use the key Guessing what a symbol means leads to mistakes. The key is part of the map — read it before you start.

Practice

Where do you look to find out what a symbol means?
It is usually in a box at the side of the map.

In the key (sometimes called the legend).

What is a map?
Think about the view it shows.

A drawing of a place as seen from above.

Is a road a human or a physical feature?
Was it made by people or by nature?

Human — roads are built by people.

Is a river a human or a physical feature?
Was it made by people or by nature?

Physical — rivers are natural.

Quick check

Symbols and Keys — quick check

Which of these best defines "symbol"?

A small picture on a map that stands for something real, such as a tree, a church or a car park.
Key takeaways
  • Symbols and Keys: learn how simple pictures and a key help readers understand any map.
  • Plans show places from above: A plan is a simple map of a small area, such as a classroom.
  • key: The box on a map that explains what each symbol means — always check it first.
  • Watch out for: thinking the symbol is the real size
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