Today we celebrated our 100th day of the school year!  We began by displaying collections of 100 items and traveling to each of the other classrooms to see everyone else’s collections.  The collections were quite varied: 100 cheerios, 100 Pokemon cards, 100 LEGOs, 100 sequins, 100 paper airplanes…

It was fun to see what everyone thought of!

Next, we made some predictions with the number 100.  Students were asked to predict where they would end up if they took 100 steps from our door, how many hops they could do in 100 seconds, how many tallies they could make in 100 seconds, and how many dots they could make in 100 seconds.

Then, we tested to see how accurate our predictions were.

Many students realized just how long 100 seconds is when they became exhausted hopping, only to find that they weren’t even halfway through!

We also recognized that counting tallies was easier than counting dots because we could count by 5s.  Many students opted to just note whether their estimate was too large or too small rather than actually counting the hundreds of dots they had made.

We read the book 100th Day Worries by Margery Cuyler.  Here’s a description from Amazon:

When Jessica’s teacher tells everyone in class to find 100 things to bring to school for their 100th day, Jessica starts to worry. She wants to bring something really good. but what? 100 marshmallows? No, too sticky. 100 yo-yos? Nah, that’s silly. When Jessica reaches the 99th day, she really starts to worry. She still doesn’t know what to bring! Could the best collection of 100 things be right under her eyes?

Finally, we celebrated as a school with a display of 100 cupcakes after lunch — one cupcake per child, of course.

We are so happy to have completed 100 days of learning this year!