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The 100th Day of School!

March 10, 2021 | Becca Brasser


The question occupies nearly the entire 100th Day of School in first grade. Students count to 100 individually and collaboratively, by 1’s, 5’s, and 10’s. Every student uses a collection of items from home or school to sort and count to 100. Some brought Pokemon cards, pennies, and popsicle sticks. Some used shells, teddy bear counters, or sea glass from the classroom to count by 10’s and 5’s. 

On the 100th day of school students also play games, do 100 jumping jacks, fill in empty 100 charts, make trains of 100 cubes, and more!

They come up with as many expressions for 100 as they can: 50 x 2, 99 + 1, 10 + 90, 200 – 100, etc.

We know that children learn best and build understanding when they use their hands. They transition from concrete, hands-on experiences to abstract understandings. An understanding of the number 100 is an important benchmark in numeracy, and the 100th day provides a multitude of opportunities to experience that number in both concrete and abstract ways.


Becca Brasser

Teacher, Grade 1

Becca Brasser has been teaching first grade at Mustard Seed School since 2002. She’s passionate about teaching children to read, write, experiment, and take risks as they explore the world around them. Her own studies (including a Master of Arts degree from New Jersey City University) have given her expertise and experience in the area of literacy education.

Ms. Brasser especially enjoys taking her students on field trips all over the New York Metropolitan area, traveling on foot, subway, bus, commuter train, and ferry. Some favorite trips: the Hudson Hike, the New York Transit Museum, and the Central Park Zoo to study penguins.

Although she lives in the city, Ms. Brasser loves escaping to nature and finding it in her everyday life as well. She loves to explore rivers and lakes, woods and mountains with her husband Matt, their daughter, Annika, and son, Theo.

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