CIVILIZATIONS COVERED
Mesopotamia, Egypt, Indus Valley, China (overview)

SCIENCE FOCUS
This week introduces science as a process of reasoning from incomplete evidence. Archaeologists use physical clues, stratigraphy, and multiple dating methods to reconstruct the past, just as scientists use data to build theories. Understanding the difference between observation and inference is a foundational habit of scientific thinking that will carry through the entire year.

KEY IDEAS
•    Civilizations share common features across cultures, including food surplus, government, specialization, and writing.
•    Humans have basic needs that shaped where and how early settlements formed.
•    Not all societies developed in the same way or at the same pace.
•    Archaeologists use physical evidence to reconstruct the past.
•    All evidence is incomplete. Inference is not the same as fact.
•    Multiple dating methods give different kinds of information.

SPINE READING
(coming soon)

VOCABULARY

• Civilization: A complex society organized around cities, shared government, specialization of work, and some form of record keeping.
• Surplus: More of something than is immediately needed. Food surplus allowed ancient societies to grow because not everyone had to farm.
• Specialization: Focusing on one kind of work rather than doing everything yourself. A potter specializes in making pottery; a farmer specializes in growing food.
• System: A set of connected parts that work together to do something.
• Hierarchy of Needs: The idea that humans must meet basic needs (food, water, shelter, safety) before they can focus on higher-level needs like community, art, or learning.
• Archaeology: The study of human history through the careful excavation and analysis of physical remains.
• Artifact: Any object made or used by humans that can give us information about the past.
• Excavation: The careful, systematic process of digging to uncover buried artifacts, structures, or remains.
• Stratigraphy: The study of soil and rock layers. Deeper layers are generally older, so stratigraphy helps archaeologists figure out the sequence of past events.
• Relative Dating: Determining the approximate age of something by comparing it to surrounding layers or objects, without giving an exact date in years.
• Absolute Dating: Determining the actual age of something in years using scientific measurement.
• Carbon Dating: A method that uses the decay of carbon-14 in organic materials to calculate approximately how old something is.
• Inference: A conclusion reached through reasoning from evidence, not from direct observation. A key concept this year.

DISCUSSION QUESTIONS

1. What do you think a civilization needs to have? What would be on your list?
2. If you found a clay pot buried in the ground, what could you figure out about the people who made it? What couldn't you figure out?
3. Why do you think not all ancient societies developed in the same way or at the same pace?
4. What is the difference between seeing something and inferring something? Can you give an example?

Digging Deeper

1. If carbon dating can only be used on organic materials, what do archaeologists do when they need to date stone structures or metal objects?
2. Why does absence of evidence not mean evidence of absence? Can you think of a real-world example of this?

TIMELINE PAGE
Label the next page in your timeline "The Ancient World Begins." The workbook prompt asks learners to draw an archaeologist carefully brushing away soil to reveal an artifact buried in layers of earth. Encourage your learner to label at least two of the soil layers and note which is older.

FIGURE SPOTLIGHT: Kathleen Kenyon
Kathleen Kenyon (1906-1978) was a British archaeologist best known for her excavations at Jericho, one of the oldest continuously occupied settlements on Earth. Beginning in 1952, Kenyon used a careful method of excavating and recording soil layers that became known as the Wheeler-Kenyon method, and her work transformed how archaeologists study ancient sites in the Near East. Before her excavations at Jericho, many scholars had assumed the city's walls dated to a particular historical period. Kenyon's stratigraphic evidence showed the real picture was far more complicated and far older. She was also the first woman to serve as president of the Oxford University Archaeological Society. Her work is a reminder that the way you dig matters just as much as what you find.

Digging Deeper
What is the Wheeler-Kenyon excavation method, and how is it different from simply digging a big trench? Why does the way archaeologists