Ghouls just want to have fun. 👻 Make paper ghosts dance with this science experiment for your elementary students! What you'll need: tissue paper, a balloon, and something that creates a little static electricity. More here: http://spr.ly/6181MmuW3 🎈 | HMH Education

New Year, new science activity! 🗓 On nearly every New Year's Eve since 1907, crowds have gathered in Times Square to watch the ball drop at midnight. Back then it took six people to lower the 700-pound ball made of iron and wood down a flagpole using a pulley. Today, the crystal-covered ball weighs nearly 12,000 pounds, and a computer system controls the drop. Challenge your students to design their own pulley to stage a ball drop. Tell students a pulley consists of at least one wheel and some