Celebrate 100 fantastic days of school by creating a school-themed collage with 100 pieces in this unique arts and crafts activity.

This project commemorates the milestone of completing the first 100 days of school, while giving your child a manipulative to practice counting to 100.

Ask your middle schooler to figure out what the next 100 days hold in store for him; he'll keep track of daily, weekly, and monthly commitments.

If your fifth grader has a voracious appetite for reading, she'll be surprised to see many books she has devoured. Show her how to make a "100 Books" chart!

Challenge your first or second grade reader to make 100 words in this reading and spelling activity for the 100th Day of School.

The 100th day of school is an important benchmark for kids in the lower elementary grades. Help your kid create a 100 days of school shirt to celebrate!

Does 100% Fruit Juice have more Vitamin C than juice with artificial ingredients? Find out in this science fair project idea!

This project investigates an interesting question: If one learns to write backwards, is one also able to read backwards?

Kids write about their favorite parts of school in 100 words to celebrate 100 days of school in this 5th grade writing activity.

Celebrate the 100th day of school by creating a geometric, math-inspired mural in the style of Henri Matisse in this creative kindergarten grade art activity.

Practice counting to 100 independently with this American flag craft project! 

Familiarize your preschooler with the concept of numbers one through five and counting with this hands-on activity.

In this activity, your child will learn and practice mindfulness by using their senses to focus on one thing at a time.

Challenge your high school student to find the flaw in this short mathematical proof that one is equal to two.

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

Show your kindergartener how to count to 100 by tens, and he'll get an adorable cheerio necklace in the process!

Have some fun with your first or second grader, looking for creative ways that 100 cents can make $1.00!

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

Celebrate the 100th day of school by making a unique work of art using 100 colorful pom poms in this fun kindergarten arts and crafts activity.

Does your preschooler like cereal? Explore numbers with everyday objects and food with this fun counting activity.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Is your princess missing a crown? Look no further: grab a few sparkly pipe cleaners and twist for a crown that's half jewelry, half sculpture, and 100% shine.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Send your child on a table of contents treasure hunt to help build basic research skills! Navigating a book is a skill that is sure to come in handy later on.

This project reuses freebie magnets to make one-of-a-kind magnets for your one-of-a-kind kid!

This experiment explores how listening in to a one-sided conversation affects concentration.

Do this fun activity that uses stickers to help your kindergartener with counting, basic addition, and one-to-one correspondence.

Counting with one-to-one correspondence is an important kindergarten math skill. This simple activity turns it into a play-anywhere game.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Create some flying bats with your little one this Halloween season. This activity is a great way for your little one to learn about symmetry.