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Chinese graded reading with audio and contextual lookup.

Environments for training AI and agents that handle recurring engineering work

Mandarin audio and video lessons built around conversations.

Guidance on how to organize and improve Mandarin study.

Chinese reading through graded news-based lessons.

Graded Chinese stories with audio and word support.

Chinese courses from introductory pronunciation to advanced study.

European Portuguese courses, stories and audio.

Short English news with graded text and audio.

Turns any subject into a structured course with five tiers and hands-on labs.

Chinese lessons with speech recognition and character practice.

Piano learning with songs and graded exercises

German reading with difficulty labels and vocabulary explanations.

English lessons built around news at several levels.