To celebrate the 100th of third grade, engage students in a writing activity. Before the activity, compile a list of items that cost $100. Next, ask students to write about what they would buy if they had $100 to spend on anything they want. Encourage students to be as serious or as silly as they wish. After students complete the assignment, share the list of items that cost $100.
On your 100th day of class, help students think about the past and future with a group activity. Divide students into two groups, and ask the first group to research what their community was like 100 years ago. Encourage the group to look for pictures that they can share with the class. Ask the other group to consider what their community will be like in 100 years, and to create a presentation about the way they believe homes, transportation, food, work and school will change in the next century. Ask students to create their own artwork for their presentation.
Create murals to commemorate your 100th day of class. Cut or tear brightly colored construction paper and tissue paper into small squares. Give each student a paper cup and ask him to choose 100 squares of paper, as well as a sheet of card stock and a glue stick. Invite students to glue the squares onto the paper to make a mural. Show students how to make interesting patterns and pictures. When students have completed the project, hang the murals together on a bulletin board.
Take a look back at the last 100 days with a group activity. Hang a large piece of bulletin paper to the wall and write "Look at All We've Done in 100 Days" on the top. Go around the room asking students to share something that they remember learning or doing during the first 100 days of school. Responses might include books students read, songs they learned, games they enjoyed, class celebrations, quizzes and tests, subjects mastered or class field trips. Write down student responses as well as each student's name. Hang the paper in the classroom to show students all that they have accomplished. If possible, decorate the page with pictures illustrating student achievements.