We’re loving our star and constellation unit … especially with all the fun glow-in-the-dark activities that can be done! I’ve always loved preparing hundred board extensions, and this is one of my favorites. This hundred board extension uses 100 glow-in-the-dark stars as well as 100 odd and even labels.
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I like to use the traditional Montessori hundred board (either purchased or DIY) and presentation first, and then add creative 100 board extensions to add interest.
Materials Used for Montessori Hundred Board Extension of Counting 100 Ducks
- Free Printable Hundreds Board/Hundreds Chart Large (printed at 75%) by Jessica Stanley at Teachers Pay Teachers (Note: If you made a hundred board like I had for counting 100 ducks, you won’t need to make a new one. I used the same hundred board.)
- Foam core board (poster board would also work) – for making the DIY hundred board
- X-acto knife – for making the DIY hundred board
- Glue Stick – for making the DIY hundred board
- 100 glow-in-the-dark stars (I used these glow-in-the-dark stars although these glow-in-the-dark stars would also work well. I just had both sets because I’m doing so many different activities with a variety of sizes of stars.)
- odd and even labels (optional – These are from our subscriber freebie constellation pack.)
How to Prepare the Counting 100 Ducks Hundred Board
This is much easier than you’d expect.
- If you print out the hundreds board at 100%, it’ll have 2″ squares. I wanted 1.5″ squares, so I printed mine at 75%. That worked perfectly.
- Cut out the printed pages.
- Laminate the pages if you wish. (I didn’t.)
- Then you simply need to cut out foam core board backing the same size as the printable and glue the printable pieces together to make a large hundred board.
I love that this can be used to count a variety of objects for a hundred board extension for different themes and seasons! We’ve already used ours for counting 100 ducks. It can also be used as a 100th Day of School activity!
Working with the 100 Glow-in-the-Dark Stars Hundred Board
Finishing Placing Odd and Even Labels on Montessori Hundred Board Extension with Glow-in-the-Dark Stars
This activity was actually a collaborative project. Just like a number of children often work together on one activity, my 4½-year-old granddaughter, Zoey, her aunt Christina, uncle Tom, and I all worked together putting the stars and odd and even labels on the hundred board. (Note: Zoey had worked with the odd and even labels for 1-10 with our ladybug work already. This just extended the odd and even numbers to 100. Zoey could also count to 100, but this activity was a good way to show how odd and even numbers always vary according to the units. And the glow-in-the-dark stars are very cool!)
In the photo, Zoey shows the finishing work of arranging the labels to correct any that are out of place.
Comparing One Hundred Stars to One Million Stars
Then we used a book Zoey loves, How Big Is a Million?, to compare 100 stars to 1,000,000 stars. (Note: How Big Is a Million? is also available from Book Depository with free worldwide delivery.)
How Big is a Million? with 1,000,000 stars poster is available from Amazon.
DIY Hundred Board with 100 Glow-in-the-Dark Stars
Finally, Zoey carefully carried the hundred board with stars and labels into our bathroom that can be made completely dark for some glow-in-the-dark fun!
Other Extensions for the Montessori Hundred Board
How Big Is a Million? is also available from Book Depository
Free Songs about 100 {Free Songs and Rhymes for Circle Time}
Montessori-Inspired 100th Day of School Activities
100th Day Activities – Free Printable Extensions for the Hundred Board
A number of my themed posts have hundred chart art (something I love).
More Astronomy Activities and Resources
- Free Star and Constellation Printables and Montessori-Inspired Constellation Activities
- Astronaut Unit
- Montessori-Inspired Astronomy Activities
- Montessori-Inspired Star and Constellation Unit
- Montessori-Inspired Moon Unit
- Montessori-Inspired Solar System Activities
- Montessori-Inspired Moon Activities for Toddlers and Preschoolers
- Montessori-Inspired Phases-of-the-Moon Playdough Tray
- Free Moon Printables and Montessori-Inspired Moon Activities
- Montessori-Inspired Moon Activities with Spielgaben {Free Printables}
- Free Moon Do-a-Dot Printable (Montessori-Inspired Instant Download)
- Free Moon Cutting Strips (Montessori-Inspired Instant Download)
- The Best Moon Books for Kids
- Fun Montessori Hundred Board Extension – Count 100 Glow-in-the-Dark Stars
- The Ultimate Star and Constellation Unit
- The Best Star and Constellation Books for Kids
- Free Constellations Do-a-Dot Printable (Montessori-Inspired Instant Download)
- Create a Glow-in-the-Dark Constellation with Dictation or Writing Tray
- Free Constellation Cutting Strips (Montessori-Inspired Instant Download)
- Free Astronomy Cards from KHT Montessori
- Free Solar System Printables and Montessori-Inspired Solar System Activities
- Free Solar System Songs and Educational Printables
- Free Y for Year Do-a-Dot Printable (Montessori-Inspired Instant Download)
- The Best Space Books for Kids {Featuring Solar System Books}
- Free Solar System Cutting Strips (Montessori-Inspired Instant Download)
- Montessori Work with Scale Distances of Planets from the Sun
- Montessori Astronomy Printables for Preschool Through Elementary
- Free Sun Do-a-Dot Phonics Printable (Montessori-Inspired Instant Download)
- Building a LEGO Mars Rover Plus Montessori Space Exploration Resources
I’d love to hear about your favorite hundred board extension! 🙂
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This is totally gain children’s attention it easy and fun. Thanks for sharing