The 100^th day of the school year is a great marker for students and teachers alike (it generally falls in late-January to mid-February, depending on your school’s calendar), and gives young kids the opportunity to have tons of fun with the number 100. Ideas for classroom activities abound online, but here are a few of our favorite resources:

• What will your first graders look like when they’re 100? Ask them to create self-portraits with cotton balls and construction paper. Check out this adorable inspiration from teacher-blogger Finally in First.

• Picture books are a great way to introduce the idea of counting to young students. Here is a stellar roundup of 10 picture books about the number 100 from Childhood 101.

• Playdough to Plato has an amazing list of 25 must-try 100^th day activities, including crafts, math puzzles, and writing projects.

• Scholastic suggests creating a 100^th Day Museum or hosting a 100^th Day Olympics to engage students before and after the big day.

• Check out this 100^th day fashion show, with original t-shirts, courtesy of the brilliant folks at Kindercraze. If funds and time don’t allow for creating new t-shirts, you can adapt this idea by bringing in recycled clothes, shoes, and hats for students to dress up.

• Teachers Pay Teachers has this nifty freebie of 100 Exercises for the 100^th Day of School that includes activities and task cards for K through 2^nd grade.
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Have a happy 100^th Day!