To determine how many times Joslani needs to fill his \( \frac{1}{8} \) teaspoon measuring tool to achieve \( \frac{5}{8} \) teaspoon of coloring, you can divide the total amount of coloring needed by the amount he can measure at once.
- Convert \( \frac{5}{8} \) teaspoon to an equivalent fraction based on the \( \frac{1}{8} \) teaspoon measurement:
\[ \frac{5}{8} \div \frac{1}{8} = \frac{5}{8} \times \frac{8}{1} = 5 \]
This tells us that he needs to fill his measuring spoon 5 times to have enough coloring for the slime recipe.