Lesson 1 by Donna Coffman https://padlet.com/donna_l_coffman/bgr81quu1w2g Energy en-us 2019-06-25 14:26:53 UTC 2019-06-25 14:37:00 UTC hello@padlet.com https://imgglb.padletcdn.com/v13/image?t=g_auto&url=https%3A%2F%2Fpadlet.net%2Ficons%2Fpng%2F1f4a1.png How can energy be observed? donna_l_coffman https://padlet.com/donna_l_coffman/bgr81quu1w2g/wish/369127005 2019-06-25 14:36:47 UTC https://padlet.com/donna_l_coffman/bgr81quu1w2g/wish/369127005