Print template and cut out the pieces.

Trace Spiderman's head onto red construction paper.

Trace the eyes on to black and white craft foam. The larger eye pieces should be traced on black foam and the smaller pieces on white foam. Cut out all the foam pieces.

Glue the white part of the eye on top of the black, then glue the eyes to the head.

Use the black marker to draw lines extending out from the eyes,

Fill in the web.

Next, draw lines extending from the bottom of the eyes.

Fill in the web underneath the eyes.

Cover the back of the cereal box with blue craft foam.

Use box cutters or an X-acto knife to cut a hole for the valentines (this is a good job for the parents).

Cut a piece of the blue craft foam so that it covers the bottom half of the box. Attach to the front of the box with hot glue, then glue to the sides of the box. Cut off extra craft foam so that it's flush with the back of the box.

Cut a piece of the red craft foam lengthwise so that it's longer than the blue piece. Cut the front into a short "v" shape, being careful that it's still long enough so that the box doesn't show through. Be sure to also leave a long enough length of foam on top because you'll also use it to cover the top of the box.

Make two cuts in the craft foam so that it can be folded across the top of the box. Fold down the side flaps and secure with glue, then fold the top top flap and glue.

Use the permanent marker to draw lines on the red section of the foam. It may help to use a ruler to make the lines straight.

Fill in the rest of the web pattern.

Because the head may be a little "floppy", you can strengthen it by attaching a wooden skewer or a popsicle stick to the back. You may have to cut the stick to fit first.

Once the stick is firmly attached, hot glue the head to body.

For the finishing touch, glue the spider to Spiderman's chest. Now all that's left to do is to collect those classroom valentines!