Would knowing every fraction operation be enough?
Three triangles are shaded. How many more must be shaded for 4/9 of the whole figure to be shaded?
Before you reveal: The child may know fractions and still not see how to start. What is missing from the diagram?
Show me what the question was hiding
Five lines that are not drawn divide the whole figure into 18 equal triangles. The hidden structure makes the fraction usable.
The first step was seeing what the diagram did not draw.
