A big hill makes sledding more fun. Gravity pulls you down the hill. You go faster!
Photo Credit: Imgorhand/E+/Getty Images
In the Know
Magnified
A microscope is another tool. It is also used to … read more
In the Know
Helping During the Holidays
Many people celebrate holidays in December. Holidays are good times … read more
In the Know
Celebrating Hispanic Culture and Art
This painting covers a whole wall in Chicago. It is … read more