Have children design postcards by gluing pictures from magazines onto one side of a piece of card stock. Encourage children to write messages to classmates on the other side of the postcard. Make an advertising circular by drawing pictures of food, clothing and other items and labeling them with a price. Staple the pictures together to make a circular. Create stamps by cutting adhesive labels into squares and decorating them with markers.
Provide a wide range of writing supplies for children to use in making letters, postcards, magazines and advertisements to "mail" at the classroom post office. Include different sizes of paper and envelopes, as well as colored pens, crayons and markers. Help children practice writing their names and addresses on the envelopes. Children can also sort mail into shoe boxes labeled with the names of classmates.
Have children practice coin-counting skills by purchasing stamps or mailing packages at the classroom post office. Ask children to bring junk mail from home. Sort the junk mail into categories such as catalogues, fliers, envelopes and circulars. Then graph the number of pieces of each type of mail and determine which categories are most and least common. Lay the junk mail end to end and measure the length with a tape measure.
Encourage children to build a neighborhood out of blocks, then draw a map of the neighborhood to guide "mail carriers" on their rounds. Fill boxes with square or rectangular blocks, arranging the blocks so that they fit in the box completely. Weigh pieces of mail by using a food scale, and compare them, using terms such as "heavier" and "lighter."