Is this a MECHANICAL or DIGITAL clock?
mechanical clock
Something that people made many years ago.
invention
The buffalos are _______ the soil.
Plowing
Name 2 simple machines.
ramp, pulley, lever, wheel and axle, wedge
The clock has a ______.
Pendulum
Before clocks, how do people tell time?
sundial or the sun
What’s the most useful invention? How?
awesome!
/What’s this?
Watermill
Is this a MECHANICAL or DIGITAL clock?
digital
What are these?
arrow and bow
What is your favorite invention? Why?
great!
The king is riding a _____.
chariot
Which one makes electricity? wind turbine or windmill
Wind turbine
What’s this?
windmill
What’s this?
sundial