Stone tools and human evolution

How do stone tools provide evidence for human evolution?

They show changes in the abilities, technology and behaviour of human ancestors over time.

How have stone tools changed over time?

Many became more carefully shaped, specialised and complex.

What can the complexity of stone tools suggest?

Changes in tool-making skills, planning and behaviour.

How can stone tools be dated?

By dating the materials or geological layers in which they are found.

Why is the environment around a stone tool important?

The surrounding rock layers and associated remains can help scientists estimate its age and reconstruct the conditions in which it was used.

What is one limitation of stone-tool evidence?

Tools provide evidence of behaviour but do not directly reveal every physical feature of the people who made them.