This image depicts an indoor classroom or lecture hall located in Jiangning District, China. A white ceiling with two rectangular fluorescent light fixtures is visible at the top. A large white projection screen displays a presentation slide titled "Significant figures - rules" in blue text, with subsequent rules and examples presented in red bullet points and black text. Visible content includes rules concerning leading and trailing zeros, integers, and calculations involving significant figures, with examples such as "1.62 has 3 significant figures" and "1.23 + 3.4561 = 4.66, not 4.6761". In the foreground, the backs of two individuals' heads and shoulders are partially visible, indicating an audience viewing the presentation. One individual on the left has dark, curly hair, and another on the right, wearing a blue garment, has short, dark hair. in Jiangning District, China

Obed

Mar 11, 2026, 6:10 AM

Jiangning District, China

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This image depicts an indoor classroom or lecture hall located in Jiangning District, China. A white ceiling with two rectangular fluorescent light fixtures is visible at the top. A large white projection screen displays a presentation slide titled "Significant figures - rules" in blue text, with subsequent rules and examples presented in red bullet points and black text. Visible content includes rules concerning leading and trailing zeros, integers, and calculations involving significant figures, with examples such as "1.62 has 3 significant figures" and "1.23 + 3.4561 = 4.66, not 4.6761". In the foreground, the backs of two individuals' heads and shoulders are partially visible, indicating an audience viewing the presentation. One individual on the left has dark, curly hair, and another on the right, wearing a blue garment, has short, dark hair.

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