Provide preschoolers with pictures of opposites. Ensure each picture is on a separate sheet. Have students arrange pairs of opposites face-to-face. Next, stack each pair and bind them together to form a book. When the pages are open, one half of the opposite should be on the left side of the book and the other half on the right.
Prior to class, cut enough paper dolls so each preschooler can have two. Also cut out various types of clothing -- some that would be worn on hot days, and some appropriate for cold weather. Examples include shorts, T-shirts, flip flops, sweaters, scarves and boots. Have preschoolers dress one of their paper dolls for hot weather and the other for cold. Use glue to adhere clothing pieces to the dolls.
Allow preschoolers to use their imagination to make their own opposites world. Provide the class with a large sheet of paper for drawing a mural. Ask preschoolers to paint or draw figures and objects that are opposite from the way they are in real life. For example, draw small buildings and large birds, have people walk on the sky instead of the ground, or have people live in cages while animals drive cars.
Trace each preschooler's hand on individual sheets of paper. Trace your hand over the child's tracing. Discuss the difference in sizes between the two hands. Allow preschoolers to decorate the hands using a variety of materials, including crayons, pom-poms, glitter, stickers, rhinestones, paint and markers.