Hooray! You're more than halfway through the school year and it's time to celebrate with these five-minute activities.

1. Make a list of 100 magical events, people, places, or things in Harry Potter and the Sorcerer's Stone.

2. Look at a map to find what is 100 miles north, south, east, and west of your school.

3. Read One Hundred Hungry Ants, by Elinor Pinczes (Houghton Mifflin, 1999).

4. What was happening 100 years ago: Who was President? What were some new inventions?

5. String necklaces with 100 beads or Cheerios.

6. Calculate what year it will be when you turn 100 years old.

7. Write a story about what the world will be like in 100 years.

8. Find the names of two cities in every state, to add up to 100 cities.

9. Are there buildings taller than 100 stories? Find out.

10. Sing “100 Bottles of Pop on the Wall” all the way through!

11. Do 100 hops or 100 jumping jacks.

12. Learn 100 new words.

13. Read The 100th Day of School, by Angela Shelf Medearis (Cartwheel, 1996).

14. Measure a stack of 100 pennies.

15. Read Ezra Jack Keats's The Snowy Day (Penguin, 1996), and make 100 paper snowflakes to decorate your class.

16. Build the tallest structure you can, using tape and 100 craft sticks or straws.

17. Count and glue 100 beans or seeds to a piece of cardboard.

18. Count by 2's to 100.

19. Then, count by 5's.

20. Get together with another class and blow up 100 balloons.

21. What would you do with $100?

22. What would you do with 100 Popsicles?

23. What would you do with 100 elephants?

24. Close your eyes and open them when you think 100 seconds have passed. How close were you?

25. Measure a string of 100 paperclips.

26. If you have 100 quarters, how many dollars do you have?

27. Write a story that uses exactly 100 words.

28. Write a shared story of 100 sentences, with each child adding a sentence at a time.

29. Put together a class collection of 100 favorite books.

30. Make a list of 100 fun things to eat!

31. A century lasts 100 years. A decade is 10. Find one fact about each decade of the 20th century.

32. How did you spend the last 100 hours? How many hours did you sleep? How many did you do homework? How many did you spend eating?