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Primary school teacher walking in classroom while multiethnic students studying. Male teacher holding textbook helping schoolchildren during class. Professional educator walking in classroom.
Illustration of a magnifying glass icon. Magnifying magnifying glass zoom zoom icon professionally on white background
Binocular icon. Binocular silhouette isolated on white background.
Gloved hand holding pen, interacting with papers, surrounded by laboratory equipment, blue liquid-filled beakers in the foreground and background, indicating focused research environment
beard man holding telescope observation
Crescent moon phases at night sky. Realistic 3d vector sequence frame shows the moon satellite varying shapes from eclipse, waning and waxing, to full moon. Natural lunar celestial astronomical cycle

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