Teach students all about insects. Divide the bulletin board in half: one half for the good insects do, such as create silk or pollinating fruits, plants and vegetables; and the other half for the damages insects do, such as contaminating food and causing damage to crops. Create visual representations for both halves of the board. Use as a teaching point by discussing the board with the class.
Display the students work about bugs and insects. Create a bulletin board with several pictures of insects and an insect-themed border, leaving the middle of the board blank. Teach a series of lessons on insects, giving the students various insect arts and crafts to complete. Hang each completed activity on the bulletin board.
Encourage students to learn about insects in a creative way. Begin by covering the bulletin board with blue construction paper. Using brown construction paper, construct a large tree with branches. Staple, tape or glue the tree onto the bulletin board. Give each preschooler a black and white coloring page of different insects, such as ladybugs and butterflies. After the students complete their pictures, have an adult cut the pictures out and attach them to the bulletin board.
Teach students about insect life cycles. Take several types of insects of interest to your preschoolers and create a picture depicting the complete life cycle of each insect. On the bulletin board, attach the pictures of the life cycles in order, with an arrow pointing to the next development stage. Add various information to the life cycles, such as how the length of time in between the development stages. Use the bulletin board as a teaching point. Hold a weekly discussion about a different insect until you have covered all insects displayed on the bulletin board.