From two different street sign pictures and their enlargements, students are to identify the scale factor of each enlargement and either a missing length or the missing factor when enlarging the area.
For this task students are required to record, in a table, the compass bearings of objects shown on a submarine radar screen. Distances from the submarine are also recorded.
In this practical task, students estimate how many multi-link blocks equal the length of two common classroom items. They then check their estimate with the blocks, then measure with a ruler.