Teach world history with BCE dates

A world history unit is really several histories running at once. Egypt, Mesopotamia, Greece and China do not take turns, they overlap. TimeStrands keeps them side by side on one canvas, and handles the BCE dates that make spreadsheets fall apart.

Plan one track per civilization

Before you enter data, decide the lanes. Parallel tracks are what make the overlaps legible.

• Mesopotamia and the Fertile Crescent
• Ancient Egypt
• Ancient Greece and the Aegean
• China and the Indus Valley
• Ideas and technology, a cross-cutting track for writing, bronze, the wheel and iron

Enter BCE dates correctly

Years are signed integers, so older dates are larger negative numbers. Type -3100 for the unification of Egypt, or -1200 for the Bronze Age collapse. Never type "3100 BC" as text, that is not a date the viewer can place.

Match precision to your evidence

Ancient history rarely comes with a day. Use the precision that is honest, and add "circa" when even the year is a best guess.

• Founding of Rome, 753 BCE, a year-precision event.
• Bronze Age collapse, circa 1200 BCE, year precision plus the circa flag.
• Classical Greece, a range with century precision so it reads 5th century BCE to 4th century BCE.
• A dynasty that spans centuries, a range with millennium or century precision.

Add sources students can follow

1. Open an event and expand the sources section.
2. Paste a URL and give it a title and publisher, ideally a museum, university or encyclopedia.
3. Add the access date so the class knows how current the reference is.
4. Add a second source for any contested date; the disagreement is itself a history lesson.

Hand it to your class

Publish the timeline as public, then embed it in your LMS or course site. Students can zoom from the whole sweep of antiquity down to a single decade, and every claim carries its citation.

<iframe src="https://timestrands.com/t/ancient-world-history/embed" style="width:100%;height:560px;border:0" loading="lazy" title="Ancient World History"></iframe>