Meet
Al-Biruni
Earth & observation

Their story. Your next idea.
Al-Biruni studied astronomy and questioned whether Earth might turn on its axis. Al-Biruni studied in India and described the land around the Ganges River.
Lost Islamic History, p. 81 · 1001 Inventions, p. 230
observationsomething you notice carefully
tidethe regular rise and fall of the sea
YOUR TURN · 10 MINUTES
Make a map someone can use
Paper and colored pencils.
- Choose one room or a small imaginary garden to map.
- Draw its main features as if you were looking down from above.
- Invent a key with symbols for three things on your map.
- Ask someone to follow a route using your map. Improve any confusing parts.
Let’s wonder
How could repeated observations help you notice a pattern?
My next question: __________________________________________________