Figure 5
The composite photograph shows two panels placed side by side. The left panel displays a handwritten proportion written as “a divided by b equals c divided by d”. Below this equation, one of the fundamental properties of proportions is shown: the product of the outer terms is equal to the product of the inner terms, expressed as “a times d equals b times c”. The right panel presents a visualisation of a proportion. It shows that 2 dl corresponds to 10 pancakes, and 6 dl corresponds to x. The rectangle is divided into two horizontal sections and represents the common unit, decilitres (dl). Below the diagram, the equation is written as “x equals 10 times 6 divided by 2”.Proportion method visualisation