Maps and Locations

Chapter at a Glance

This chapter covers spatial navigation, map reading, and grid coordinate tracking. Students learn to identify the four cardinal directions (East, West, North, South) using compass tools and observations of the sun. The chapter covers street maps (solving bus routes), transit networks (tracing Delhi Metro lines to plan travel routes), map keys/legends, and Cartesian grid systems—specifically locating animals in a zoological park using ordered pairs.

Key Definitions & Terminology

• Cardinal Directions: The four main points of the compass: East (E), West (W), North (N), and South (S).
• Migration: The seasonal journey taken by birds (like the Siberian Crane flying from cold Siberia to the Bharatpur Bird Sanctuary in India) to escape harsh winters.
• Ordered Pair: A pair of coordinates $(x, y)$ that specifies the location of a point on a grid.
• Origin (0,0): The starting reference point on a coordinate grid where the horizontal axis and vertical axis intersect.
• Key (Legend): A visual table that explains what different symbols and colors represent on a map.

Formulas, Rules & Properties

• Determining Directions Using the Sun:
  If you stand facing the rising Sun in the morning:
• You are facing East (E).
• Your back is facing West (W).
• Your left hand points to the North (N).
• Your right hand points to the South (S).
• Grid Coordinate Convention:
  When locating items on a coordinate grid, move horizontally (East) along the column axis ($x$) first, and then move vertically (North) along the row axis ($y$):
  $$\text{Coordinate} = (\text{Column Number}, \text{Row Number}) = (x, y)$$
  For example, the point where the first column and the first row meet is written as $(1, 1)$.

Core Concepts & Topics

• Four Little Chicks Poem:
• A nursery rhyme illustrating the directions East, West, North, and South.
• Mapping a Room Layout:
• Drawing floor plans and identifying room objects (beds, windows, bedside tables, cupboards) relative to cardinal directions.
• Street Map Navigation (Bus and Metro Routes):
• Reading street maps to trace bus stops.
• Analyzing transit maps (such as the Delhi Metro map) to plan routes between stations like Qutb Minar (Yellow Line) and Supreme Court (Blue Line) with the fewest line changes.
• Ant Grid Crawl Puzzles:
• Measuring grid lines in centimetres to guide an ant towards food items (laddoos, sugar, bread, apples) using step-by-step directions.
• Zoo Coordinate Grid Maps:
• Finding coordinates of animals (like Panda, Tortoise, Lion, Elephant, Deer, Crocodile) by matching row and column numbers on a grid.

Worked Examples

• Tent Camp Coloring:
• West of the road $\rightarrow$ Blue tent
• Closest to the lake $\rightarrow$ Green tent
• North of the green tent $\rightarrow$ Purple tent
• South of the lake $\rightarrow$ Yellow tent
• East of the lake $\rightarrow$ New tent
• Bus Route Mapping:
• The bus starts from the parking area, heads North, and turns right onto Market Road, driving East to reach Stop 1 ($S1$).
• From Stop 1, the bus turns right onto Park Road, driving South to reach Stop 2 ($S2$).
• Ant Grid Crawl:
• To get to the laddoos: crawl $2\text{ cm}$ towards the East.
• To get to the sugar: crawl $3\text{ cm}$ towards the North.
• To get to the bread: crawl $4\text{ cm}$ towards the East, and then $2\text{ cm}$ towards the North.
• Zoo Grid Animal Coordinates:
• Panda location: Start at $0$, move $1$ step East (Column 1) and $1$ step North (Row 1). Coordinate is $(1, 1)$.
• Tortoise location: Move $4$ steps East (Column 4) and $1$ step North (Row 1). Coordinate is $(4, 1)$.
• Finding animals by coordinates:
  • $(11, 11)$ $\rightarrow$ Lion
  • $(2, 6)$ $\rightarrow$ Elephant
  • $(6, 4)$ $\rightarrow$ Crocodile
  • $(3, 10)$ $\rightarrow$ Deer

Practical Activities & Experiments

• Sun Direction Check: Standing on the school field at sunrise to find cardinal directions and identify what features lie in each direction.
• DIY Treasure Map: Sketching a map of the school layout, creating a symbol key, marking a hidden object with a red dot, and challenging a classmate to find it.
• Ant Grid Crawl: Drawing a grid on paper, placing food markers, and writing path directions in cm.
• Human Coordinate Grid: Creating a large chalk grid on the classroom floor where students stand at coordinate points like $(3, 5)$ to model ordered pairs.