Create a vibrant, colourful 3D cartoon animation with smooth, fluid motion, high-quality rendering, and a cheerful educational style suitable for fourth-grade students. Use a vertical 9:16 format optimised for mobile phone screens. The scene takes place in a bright, playful mathematics classroom filled with child-friendly colours. A cheerful children's song plays softly in the background, always keeping the Persian voices clear and louder than the music. In one continuous animated shot, a beautiful cartoon triangle enters the frame. It has large expressive eyes, arms, legs, and an animated mouth. The triangle faces the camera and sings in a clear, melodic, childlike Persian voice, with accurate lip-sync matching every spoken word: «مساحت مثلث رو، یادت باشه عزیزم قاعده ضربدر ارتفاع، تقسیم بر دو، همین!» As the triangle sings, colourful lines precisely highlight the triangle's base and perpendicular height. Simple, clear visual representations of the relevant numbers and the triangle area formula appear beside the character, reinforcing the mathematical concept without unnecessary text. The triangle remains visible as a friendly cartoon parallelogram with large expressive eyes and an animated mouth enters the frame. The parallelogram faces the camera and sings in a cheerful Persian voice, with natural mouth movements perfectly synchronised to the lyrics: «متوازیالاضلاع، چه شکل قشنگی دارم قاعده ضربدر ارتفاع، مساحتم رو میسازم!» During the song, colourful lines clearly highlight the parallelogram's base and perpendicular height, making both measurements easy for children to understand. At the end, the triangle and parallelogram stand side by side, smiling happily and waving their hands towards the viewer. Maintain consistent character designs, vibrant colours, smooth animation, appealing facial expressions, and a warm, engaging classroom atmosphere throughout. All spoken vocals must be in Persian, and both rhymes must be performed exactly as written, without changing, omitting, or adding words. Ensure convincing speech animation and precise lip-sync. Include only the two specified Persian rhymes as dialogue; do not narrate instructions, add new dialogue, or generate unrelated on-screen text. Keep the background music cheerful and child-friendly, with the voices always clearly audible above it.
Made with the AI Cartoon Maker from the prompt above.

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