The Green Light Hundreds Chart (Free Resource with Instructional Ideas)

GLHC pic

I see that 3,700 visitors have viewed “The Animated Multiplication Table.”  The combination of a ready-to-use resource coupled with instructional ideas drew some attention.  That resource was downloaded by many educators, and I quickly heard the stories of how it was used in classrooms.  Thank you for sharing!


I have another downloadable resource to share as well as several instructional ideas.  This is the Green Light Hundreds Chart.  I used a similar chart in the “The Red Box Challenge” math problem.


I’m on a learning mission, and this part of the journey is to see if I can further learn how to create another resource that can impact teachers and students far and wide.  This is my next attempt.  Thank you for helping me to learn!


GLHC pic

Click here to download the Green Light Hundreds Chart.

Here are some instructional ideas:




  1. Julie Gosdanian on December 3, 2020 at 9:14 am

    Hi Steve,

    I have provided gifted professional development to my building about your resources. Teachers have been immersing kids in rich math conversation. Everyone has been so impressed with everything you have designed. Your work is truly amazing and so appreciated!!

    As we learn to navigate teaching in a virtual world, we thought it would be a great idea to use your green light hundred chart to experience esti-mysteries with our distance learning students. Is there any way to get this chart to function in google slide format? This would allow us to upload it as an assignment in Schoology and get the results from the students’ final chart after completing all the clues. They will be able to submit their chart with a video or written explanation of their thinking.

    Thanks so much for your help!

    • Steve Wyborney on December 6, 2020 at 3:40 pm

      Hi, Julie. The Green Light Hundreds chart doesn’t work in Google slides because Slides doesn’t have a necessary animation. However, I have another suggestion for you. Take a look at the interactive hundreds chart from Math Playground and see if it might do what you are looking for. Here is the link:

      • Julie Gosdanian on December 7, 2020 at 7:13 am

        Happy Monday!

        Since some kids can’t access Powerpoint on their Chromebooks, I think this website might provide a useful alternative to solving Esti-Mysteries online for our distance learning students. Another advantage of a website is when students used the Powerpoint tool they had to play it in present mode and then could no longer see the Esti-Mystery presentation that I was presenting to them through our Teams meeting. With this web-based tool they should be able to manipulate it while still viewing the Esti-Mystery presentation in our virtual meeting.

        Thanks for the helpful problem solving idea!

  2. Nieves and Fidel on February 1, 2015 at 1:22 pm

    Fantastic resource… make the things easy in my opinion, it’s the way that the students learn and grow their curiosity about math

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