a bar that pivots around a fixed point; a seesaw
a sloping surface that makes it easier to move objects to a higher or lower place; ramp
the amount of space an object moves
a type of inclined plane used to split objects apart; axe
a simple machine that is made up of a wheel on a post with a rope around the wheel
wheel & axle
this machine makes it easier for things to roll
two or more machines working together to make work easier; scissors
a car engine; many simple machines put together that uses fuel to run.
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.