Drill eight 3/4-inch air holes in the lid of the bin. Use the razor blade to scrape the area around the holes in the inside of the lid to help the adhesive stick better. This step should be done by adults only. Children should not handle the razor blade or drill.
Run a bead of adhesive around the air holes, on the inside of the lid. Press one of the squares of screen over each hole. Let it dry for 24 hours before using the lid.
Turn the bin over and drill a dozen 1/4-inch drain holes in the bottom of the bin, to allow any excess liquid to escape from the bin. Scrape around the holes on the inside of the bin. Do not let children use the razor blade or handle the drill. Cover the holes with pieces of fiberglass screen using the adhesive to hold them in place. Allow it to dry for 24 hours.
Rip the newspaper into strips and soak them in a bucket of water. Leave them in the water about 15 minutes or less. Don't oversoak them; you should be able to get just a drop or two of water from them when you squeeze a handful of strips. Loosely fill the bin with the moistened strips, to provide bedding for the worms. Add two handfuls of soil to provide some grit for them.
Spread the worms out over the top of the bedding. They will begin to dig in immediately, to get away from the light.
Place the bin in the tray to catch any liquid that seeps out through the drainage holes. Put the lid on the bin and set the habitat where it will not freeze and will not be in direct sunlight.
Feed the worms two or three times per week. One pound of worms will eat about 3 1/2 pounds of food per week. Rotate the feeding spot so you won't run into rotting food the next time you feed the worms.