An adult can facilitate a shape comparison activity by tracing and cutting out a variety of shapes from cardboard or thick paper. Write the name of each shape onto the front with a bold marker color. Say the name and show the shape at the same time. Ask the child to repeat the name of the shape. Place the shapes on a table and ask the child to compare the similarities and differences. For example, an oval and a circle are both round, but the oval may appear stretched or longer. Take the learning a step further by asking the child to compare environmental shapes. Look for shapes such as squares, triangles, rectangles in the home, classroom or outdoors. Ask the child to describe how the objects are the same or different.
Create a simple height comparison chart or graph to demonstrate the different heights of children in a group. Use a yard stick or measuring tape to take an accurate height reading for each child. Write the child's first name and height onto a chalk board, dry erase board or large piece of paper. Create a class bar graph of the different heights for a pictorial representation of the comparison. Discuss the similar and different heights with the children to improve understanding of the comparison concept.
Set up a weights and measures experiment to improve a young child's ability to compare and contrast different objects by size or volume. Collect various objects, from a light feather to a heavy rock. Ask the children to predict which one will be heavier and why. Weigh the items separately on a scale. Have the child tell you which number is higher, thus comparing which object weighs more. Conclude the lesson by going back to the child's prediction. Discuss whether the comparison was accurate, and the reasons why or why not.
Use photos, drawings or actual animals to create a comparison activity for young children. Ask the child to describe how two animals differ or are similar. This may include aspects of appearance such as fur or pattern, sounds each animal makes, geographic areas where the animals come from, or the kinds of places -- such as a farm or the woods -- where the animals live. Follow the discussion by asking the child to draw comparison pictures of the animals using construction paper and colored markers or crayons.