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How do you navigate accurately and safely through an Australian natural environment using a map, compass and modern tools?

Apply navigation skills, including map reading, compass use, bearings and the responsible use of GPS, to travel safely through natural environments.

Practical navigation for outdoor journeys, covering topographic map reading, contours, grid references, compass use, taking and following bearings, pacing and timing, and the responsible use of GPS.

Reviewed by: AI editorial process; not yet individually human-reviewed

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  1. What this dot point is asking
  2. Reading a topographic map
  3. Grid references and locating points
  4. Interpreting contours and terrain
  5. Using a compass
  6. Pacing, timing and staying found
  7. Responsible use of GPS

What this dot point is asking

You must apply navigation skills to travel safely through a natural environment. This is a practical competency assessed through your journeys in Assessment Type 2.

Reading a topographic map

A topographic map shows the shape and features of the land. Key elements are the scale (for example 1:50000, where one centimetre equals five hundred metres), the legend, the grid, and contour lines. Always orient the map to the ground using terrain features or a compass so that what you see matches what is drawn.

Grid references and locating points

Grid references let you describe an exact position. A four-figure reference identifies a one-kilometre square; a six-figure reference narrows it to roughly one hundred metres by reading eastings first (the numbers across the bottom) then northings (the numbers up the side). The phrase "along the corridor, then up the stairs" reminds you to read east before north. Accurate grid references are essential for trip plans, communicating your position and calling for help.

Interpreting contours and terrain

Reading contours turns a flat map into a three-dimensional picture. Closely spaced contours warn of steep climbs or descents; a V pointing uphill marks a gully or watercourse; a V pointing downhill marks a spur. Understanding this lets you choose efficient, safe routes, avoid cliffs and identify water. Linking map features to what you see on the ground (a saddle, a creek junction, a knoll) is the core skill of staying found.

Using a compass

A baseplate compass does three main jobs: orienting the map, taking a bearing from the map, and following a bearing on the ground. To take a bearing you align the compass edge from your location to your destination, rotate the housing so the orienting lines match the map's north-south grid lines, then read the bearing at the index. To follow it, you turn your body until the magnetic needle sits in the orienting arrow, then walk in the direction of travel.

Pacing, timing and staying found

Beyond map and compass, you estimate distance travelled using pacing (counting paces over a known distance) and timing (using an expected speed). Combining timing, pacing and terrain recognition lets you track your progress and recognise quickly if you have gone wrong. The best navigators continuously check that the ground matches the map rather than waiting until they are lost.

Responsible use of GPS

GPS and phone mapping apps give a quick position fix and are valuable backup, but they have limits: batteries fail, signal can drop in gorges or dense forest, and devices break. Relying on them alone is a common cause of people becoming lost when technology fails. Best practice is to navigate primarily with map and compass, use GPS to confirm position, and always carry spare power and a paper map.

Exam-style practice questions

Practice questions written in the style of SACE Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

SACE 20224 marksSource-based: Using a 1:50000 topographic map, explain how to read a six-figure grid reference and how contour spacing tells you about the terrain.
Show worked answer →

Four marks: grid reference (about 2 marks) and contours (about 2 marks).

A six-figure grid reference locates a point to about 100 m. Read the eastings first (numbers across the bottom), then the northings (numbers up the side), remembering along the corridor then up the stairs (2 marks).

Contour lines join points of equal height. Contours close together show steep ground; contours far apart show gentle ground, and their patterns reveal hills, valleys, spurs and gullies (2 marks).

SACE 20213 marksCalculation and method: On a 1:50000 map two points are 6 cm apart. Calculate the real distance in kilometres, and explain why magnetic variation must be allowed for when following a bearing.
Show worked answer →

Three marks: the distance (about 2 marks) and magnetic variation (about 1 mark).

At 1:50000, 1 cm represents 500 m. So 6 cm represents 6×500=30006 \times 500 = 3000 m =3= 3 km (2 marks). Carry the units.

Magnetic variation: a compass points to magnetic north, but the map is drawn to grid north. The difference must be allowed for when converting between map and compass bearings, or you will drift off course over distance (1 mark).

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