Teach preschoolers about their five senses as they touch, taste, smell, hear and see different objects in the classroom. Fill a box or bag with small objects with different textures, weights and sizes and instruct children to close their eyes and try to guess the objects using just their senses of touch. Blindfold a preschooler and seat her in front of different foods with strong smells. With her hands in her lap, invite her to use only her sense of smell to guess the food. During snack time, let students try to guess their snack based only on the taste.
Preschoolers love to be unique, so they will be excited to learn that no two fingerprints are exactly the same. Have each preschooler press his finger onto an ink pad and then onto white paper. Give students a magnifying glass to examine the loops, whorls and other intricacies of their own personal fingerprints and compare to those of their classmates. Invite preschoolers to make fingerprint pictures, using their fingerprint to create the heads or bodies for animal drawings to which they can add ears, legs and other details with markers or crayons.
Teach preschoolers all about their bodies with life size drawings of each child showing the location of major organs. Trace each preschooler lying on a large piece of white paper and let students color in the face and hair. Demonstrate where the heart, lungs, stomach and brain are located one at a time, telling students a little bit about their function in the body and then have students draw the organs in their proper places on their life size drawing. Label the areas of the five senses as well.
Keep track of preschoolers' heights with a special measuring wall throughout the year and discuss growing, proper nutrition and sleep. Hang a growth chart against one wall and measure preschoolers on a monthly basis throughout the entire school year so they can watch themselves grow. Talk about how children grow while they sleep and that they need certain healthy foods as fuel. Have each preschooler start a plant from a seed in the beginning of the year and keep track of its height and what it needs for food and water to compare to the human body.
Let children explore their hearts and lungs with a simple homemade stethoscope. Preschoolers can listen to each others' heartbeats and breaths in and out as they learn how the heart pumps blood all over their bodies and the lungs bring in oxygen and exhale carbon dioxide. Give each student an empty paper towel roll or rolled up piece of paper to decorate and then place one end against the chest and the other at the listening student's ear. Instruct the student to listen to deep breaths and the heart beat.