Explain the picture before the symbol
When a child sees 3/4, they may first see two numbers and a line. Begin with the model instead. Show one bar divided into four matching sections, with three sections shaded. Then say, “This is one whole. It is split into four equal parts. Three of those parts are shaded.” Only after that sentence should you point to the symbol 3/4.
This approach gives every part of the notation a visible meaning. The 4 is not only the number on the bottom; it describes the four equal parts that make the whole. The 3 is not only the number on the top; it describes the three parts being counted. The fraction symbol becomes a short way to record an idea the child has already seen.