Duolingo #546 Mathematics - English (Part 7 - Negative Numbers)

Why It Doesn't Work

• The thumbnail is just the Duolingo logo, offering zero information about the video's specific topic.
• It fails to mention 'Mathematics' or 'Negative Numbers', missing the core educational value.
• The design is generic and unengaging, lacking any visual hook or intrigue to grab attention.
• There is no visual storytelling or action, making it look like a static brand image.
• It completely repeats the brand name from the title without adding any new context.