Display Case
You can make a display case showing the kids each stage in the silkworm cycle. Buy a clear plastic box frame 11"x14". A box frame is about 1-1/4" deep so you can put three-dimensional things in it. It comes filled with a tagboard box. Cut out one of the 11"x14" sides of the tagboard box, making a frame.
Put captions on an 11"x14" piece of paper and glue it onto the inside of the tagboard frame. Now glue dead moths, cocoons, silk thread and silk cloth in the appropriate places. Cut out leaves from green construction paper and glue them in, too. Make newborn "silkworms" from pieces of black buttonhole thread. Make older "silkworms" of various sizes from Play-dough. Let them dry before gluing them down. Eggs can be Play-dough, beads, sesame seeds, or dots of yellow dimensional fabric paint. Tape the cardboard frame inside the plastic box and admire your work! Use clear silicone glue for best results (it comes in small tubes like toothpaste).
Captions clockwise from top:
The female moth lays many small eggs.
A tiny black caterpillar hatches from its egg.
The caterpillar eats mulberry leaves and grows bigger and bigger.
The caterpillar spins a cocoon of silk thread around itself.
Inside the cocoon, the caterpillar changes into a pupa.
People unwind the silk thread from the cocoons to weave into silk cloth.
The pupa turns into a moth. The moth comes out of the cocoon.
The moth mates with another moth.