Collect big and small leaves on the playground and have children bring them into the classroom. Pass out small plastic cubes that students can use for counting. Have children fit as many cubes as possible on one big and one small leaf. Children will count the cubes after they put them on the leaves. You will need to assist children with counting, but this lesson teaches children about area and volume by using large and small objects.
Read the classroom thermometer every day. Have precut red strips that children place on a chart under the appropriate weather for the day: hot, cold, cloudy or sunny. Use the red strips to compare the temperature from one day to the next and count how many days of each type of weather the class has experienced.
Measure objects around the kindergarten classroom using hands and feet to take measurements. Kindergarteners will measure desks, chairs, other students, pictures, clocks and various other objects around the room. Have students compare how many "hands" each item measures.