Explain why shadows are significant to groundhogs. Tape a white sheet of paper on the wall. Shine a light or projector on the paper. Ask the children to make shadow puppets on the wall. Trace the shadow and take the paper off the wall. Have the children decorate the picture.
Flip a foam cup upside down. Glue or tape brown paper along the cup. Glue a brown pom pom to the end of a popsicle stick. Use smaller pom pom for ears and googly eyes to create a face. Cut a slit in the top of the cup. Flip the cup over and place the popsicle stick into the cup. When you push the stick up and down it will move in and out of the hole, resembling a groundhog as it comes out of hibernation.
Cut eye holes in a paper plate. Have the children paint the plate brown and draw a nose on it with a black marker. Glue brown circles on the sides for ears. Glue a popsicle stick on the bottom. Children then have a groundhog mask.
Have children stuff a paper bag with crumpled newspaper. Staple the bottom and use your hands to mold the bag into a sphere. The children can draw eyes, a nose and ears on the bag to turn it into a groundhog's head.