Galileo Observation Notebook
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A few points of light changed a major astronomy debate, but what did they actually show? Students compare short, dated summaries of Galileo’s observations, test two explanations, repair an overblown headline and plan a next observation. Includes English-only and English–Spanish student packets, teacher reasoning and acceptable alternatives, a 30-minute plan and a 20-minute option. No telescope, internet or prior lesson is needed.
