Early Humans
Early humans used this to cook food and stay warm.
Fire
This round invention helped people move heavy things more easily.
wheel
This place keeps many books so people can read and learn.
library
Doctors give these to protect people from dangerous diseases.
vaccines
Many people use this device to call, text, and use the internet.
smartphone
Humans created this system so they could speak and understand each other.
language
This boat used wind to travel across seas and explore new places.
sailboat
This system of letters helps us read and write words.
alphabet
This medicine helps people fight bacteria and infections.
antibiotics
This global system connects computers all over the world.
internet
Early humans often hunted animals and collected plants for food. What do we call this lifestyle?
agricultureHunter-gatherers
This small metal object helps hold pieces of wood together in buildings.
Before paper, people wrote information on these hard stones.
stone tablets
Doctors use this during surgery so people do not feel pain.
Anesthesia
This system uses satellites to show your position on Earth.
GPS
About 200,000 years ago, this type of humans appeared on Earth.
modern humans
Farmers used this invention to move water from low places to higher places.
Archimedes' screw
This invention helped people print many books quickly.
printing press
Scientists discovered this in the 1950s. It carries genetic information in our bodies.
DNA
In 1969, humans landed on this place in space for the first time.
the moon
When humans started growing plants and food, this began.
agriculture / farming
This early tool helped people count and do simple math.
abacus
modern number system
Scientists use this method to test ideas and learn new things.
the scientific method
These small electronic parts control electricity in computers and phones.
transistors