Where's Wallaby?
Find the hidden wallaby using the clues revealed at the chosen coordinates.
Constructions
Construct the diagrams from the given information then check your accuracy.
Sheep Herding
Arrange the sheep in the field according to the instructions. An introduction to loci.
Loci Land
Make scale drawings of real life situations using ruler, compasses and pencil to answer questions about loci.
Loci Construction Pairs
Match the description of the loci to the diagram of the construction.
Voronoi Diagrams
Answer basic questions about Voronoi diagrams and define cells by finding the equations of the lines that bound them.
This is the main Transum help video on Loci.
Loci The Basics
A very clear demonstration of how to use a compass and a straight edge to draw common loci.
Taken 2
Using loci in the movies! Two intersecting circles are drawn to find a specific location.
Goat Grazing
Find the loci of the goat's position as it eats the grass while tethered to the rope.
Middle of Centres
The blue point is exactly in the middle of two red points. What are their coordinates?
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Teachers might find the complete Loci Topic List useful.
A locus (plural: loci) is a set of points whose location satisfies or is determined by one or more specified conditions. This topic links to Geometry and Shape and provides opportunity for accurate drawing and 'people maths' where pupils can position themselves in the classroom according to certain conditions.
