Three Engraved Messages

Abolish War Engraving.png
I understood.png
shaking a world engraving.JPG

Ask one or more of the following questions: 

What could you do to 'shake the world'?

What might have inspired a person to make these engravings?

If you had to make an engraving to accompany one of these, which one would you choose and what words would you add?