Give your students counting practice by asking them to collect 100 objects for a display. Students can choose any object that they can find 100 of and bring in their collections to show the rest of the class. This activity gives the students experience seeing what a group of 100 looks like, and how it is different with various objects. Ask students to compare and contrast their collections. For example, show them that 100 pennies will be much heavier than 100 cotton balls, and 100 milk cartons will take up much more space than 100 pebbles.
Use this recipe for 100th day fun, counting practice and simple multiplication. Set out containers of 10 different snack items such as raisins, nuts, chocolate chips, marshmallows, pretzels, cereals, sunflower seeds, and candies. Provide each student with a plastic bag. Have the students count out 10 items from each of the 10 containers and place them in their bags. Shake the bag to mix them together and create a trail mix made of 100 things.
There are many uses for a 100 chart, or a 10-by-10 grid filled with numbers 1 through 100. Provide students with a 100 chart and have them color number patterns. For instance, have them color all the multiples of 3, or practice skip counting by fives and color them in. Ask them about what patterns they find in the 100 chart. Teachers can also give students a blank 100 chart and ask children to write the numbers in the squares to give them practice with counting and writing numbers.
On the 100th day of school, encourage your students to do some creative writing focused on the number 100. Give them story starters such as, "If I had $100 I would...." and ask them to write about their ideas. Encourage creativity by asking them silly questions such as, "What would you do with 100 elephants?" Ask students to write a short story using 100 words, or for older students, ask them to include 100 sentences in their story.