REVIEW UNIT 8

what rocks are made of; a material used for building things

• solution

• stone

keep important details about something

• create

• record information

go from one side of something to the other

• cross

• invent

way to fix a problem or find a better way of doing something

• printing

• solution

making sensible decisions that help solve a problem and will be useful

• practical

• discover

using a special method or machine to put words onto paper with ink, without writing them by hand

• culture

• printing

designing and making things like bridges and machines

• engineering

• civilization

apply special treatment to something so that it lasts a long time

• develop

• preserve

design and create something which didn't exist before

• assess

• invent

think carefully about something so you can make a decision

• assess

• knowledge