Ice Age: periods in the past when areas of the world were covered by ice and it was very cold.
Agriculture: a way of living where people grow their own crops and keep animals.
Revolution: a big change in the lives of people that happens in a short time.
Fertile Crescent: area around the rivers Tigris, Euphrates and Nile.
Agricultural revolution: farming was introduced, a completely new way of living in prehistory.
Domestication: tame animals for your own use.
Pottery: an invention of farmers to store products.
Calendar: a way of organising the days, weeks and months of the year.
AD: Anno Domini, the period after Jesus Christ was born.
BC: Before Christ, the period before Jesus Christ was born.
CE: Common Era, a neutral way of describing the period after Jesus Christ was born.
BCE: Before Common Era, a neutral way of describing the period before Jesus Christ was born.
Stone Age: the time when prehistoric man mostly used tools made of stone.
Bronze Age: the time when prehistoric man learned how to make objects of bronze.
Iron Age: the time when prehistoric man learned how to make objects of iron.