Roseann Feldmann

What do staircases, dump truck beds, and ramps have in common? All of them are inclined p...

What do hammers, wheelbarrows, and brooms have in common? All of them are levers! Levers ...

What do flagpoles and some window blinds have in common? They use pulleys to perform work...

What do jar tops and water-bottle lids have in common? Both of them are screws! Screws ar...

What do a doorstop, a butter knife, and the front of a boat have in common? All of them a...

What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and ...