We celebrate The Hundredth Day with a food drive. We collect at least 100 items of non-perishable food then on the hundredth day we use the items to create our own understanding of base 10. The entire lesson is integrated into a unit on hunger and homelessness, where we learn that hunger happens to many children, even in our neighborhood. We end the lesson by donating the food to a local food bank. Mary Smith, Seattle, WA, Second grade

My fourth grade class of 24 is collecting 100 pounds of dog or cat food to donate to our local humane society. They use this as a community service activity; they write letters to the humane society; they calculate the math by adding the pounds and they do a graph by seeing how much we receive each day. On the hundredth day of school we will present the humane society the 100 pounds of food. Even the principal and other teachers are excited about donating food for the animals. Peggy McKee, Lexington, KY, Fourth grade

The first-grade classes at our school have a "100 Ways to Care and Share" project. Last year we collected 100 books and donated them to a neighborhood shelter. This year we will donate 100 bags to a neighborhood shelter. Each bag will contain useful items such as toothpaste, toothbrushes, socks, crayons, stickers, pads of paper, and books. Each class will collect 100 of each item, and then distribute them in the 100 bags. It is great for the children and for the community. Cecilia H. Thurman, Pacific Palisades, CA, First grade

I break my class into small groups and give them paper, scissors, and a stapler. Then I tell them that they are to make a paper chain that has exactly 100 links on it. I give them no other instructions. They must work as a team to make the chain. Colleen Monroe, Rochester, MI, First grade

My students and I dress as if we were 100 years old. We think and talk about what it would be like to have lived through the events of the past 100 years.
I also ask students to bring 100 edible items, such as 100 raisins, Cheerios, M & M's, Kix, etc. to class and make a huge bowl of 100 Day Fun Snack. I also ask students to bring in 100 small items (such as paper clips, buttons, screws, pennies, etc.) to count with their fourth grade buddies. They divide the objects into groups of 5s, 10s, 20s, and practice many math counting skills. We have a blast! Bonnie Kotlewski, Franklin, WI, First grade

Research Activity: Have students list 100 facts about their hometown. Develop a large chart that includes their facts and display it in the library.

Important Dates: Ask your students to make a list of the 100 most important dates in American history. Then have students share their top five or ten dates.