Based on your query, I recommend using ElevenLabs to create a podcast for primary aged children. This tool leverages voice AI to help users create or clone voices that can speak in up to 30 languages, making it a versatile tool for creating engaging and accessible learning materials.

Here's how ElevenLabs can help you:

• Voice Creation: You can build synthetic voices from scratch by selecting gender, age, and accent. This feature allows you to create a custom voice that fits your teaching style for your podcast.
• Speech Synthesis: This feature uses the voices you made to produce final audio outputs. You can turn your written lessons into spoken words, making your podcast content more accessible to your primary aged students.
• 30 Language Support: The voices retain their characteristics across languages. If you're teaching a language, this feature can help you teach with a consistent voice, aiding understanding.

Remember, ElevenLabs offers a free plan with 10,000 characters per month, which could be a good starting point for short interactive lessons. As your podcast grows, you can consider their paid plans for more characters and higher audio quality.