A smiling middle-aged science teacher standing in front of a whiteboard filled with diagrams and equations in a cluttered high school classroom, surrounded by curious and attentive students, with a globe on a nearby desk, a microscope on a table, and a student quietly working on a book in the background.

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A smiling middle-aged science teacher standing in front of a whiteboard filled with diagrams and equations in a cluttered high school classroom, surrounded by curious and attentive students, with a globe on a nearby desk, a microscope on a table, and a student quietly working on a book in the background.