Which resource is specifically designed for finding age-appropriate books?

The resource designed specifically for finding age-appropriate books is MetaMetrics® Find a Book. This tool is aimed at helping readers locate books that are suitable for their specific age and reading level, ensuring that the material is both engaging and accessible. It utilizes various metrics to match readers with books that align with their interests and reading abilities, which contributes to a more personalized and effective reading experience.

In contrast, the other options do not serve this particular purpose. A Math Forum focuses on mathematics resources and discussions, Coolmath.com is centered around fun math games and puzzles, and the Merriam-Webster Dictionary provides definitions and language resources, none of which are tailored for discovering books suitable for a certain age group.