Based on your search query, I would recommend MagicSchool AI as the most suitable tool for your needs. This platform offers a comprehensive suite of tools that can assist you in creating a figurative language lesson for grade 3 students.

The Lesson Planning feature of MagicSchool AI provides a library of plans tailored to different subjects, grade levels, and learning objectives. This can help you find a suitable base plan for your figurative language lesson.

Moreover, the Content Generation feature allows for the quick creation of original, standards-aligned educational content. This can be particularly useful in creating engaging and age-appropriate content for your grade 3 students to learn about figurative language.

Lastly, the Assessment Creation feature can help you generate custom assessments that align with your lesson on figurative language. This can be a great way to evaluate your students' understanding of the topic.

Remember, MagicSchool AI is currently free for teachers, making it a cost-effective solution for your needs.