Timeline and Sources of History
CBSE · Class 6 · Social Science
Summary of Timeline and Sources of History for CBSE Class 6 Social Science. Key concepts, important points, and chapter overview.
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Overview
History links the present with the past. It helps explain how people lived long ago, how time is measured in history, and how historians learn about earlier times from many different sources. A timeline shows events in order, while sources such as objects, buildings, inscriptions, family memories, n
Key Concepts
History connects what happened long ago
History connects what happened long ago with life today. The past helps explain the present, and the present helps ask new questions about the past.
Historical time is measured in years
Historical time is measured in years, decades, centuries, and millenniums. A century is 100 years, and a millennium is 1,000 years.
CE means years counted forward from
CE means years counted forward from the birth of Jesus Christ. BCE means years counted backward from the same point. BC and AD are older labels for th
The Gregorian calendar has no year
The Gregorian calendar has no year zero. The year 1 CE follows immediately after 1 BCE. Because of this, 2 BCE to 2 CE covers only 3 years.
A timeline is a line showing
A timeline is a line showing dates and events in the correct order.
Learning Objectives
- Understand how historical time is measured using years, centuries, and millenniums.
- Learn the meaning of BCE, CE, BC, and AD.
- Know why there is no year zero in the Gregorian calendar.
- Identify the main sources of history and the specialists who study them.
- Understand how early humans lived and how communities later grew into villages and towns.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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