100 Subitizing Slides & 10 Challenge Patterns

100 Subitizing Slides Blog Pic

With a click, a pattern of dots appears on your screen.  Instantly your students tell how many.  They don’t count the dots.  Instead they simply know the total at a glance.

Subitizing – when a person looks at a small set of objects and instantly detects the total without counting.  It’s a powerful process and a truly remarkable one.

I have a new resource for you.  100 Subitizing Slides & 10 Challenge Patterns.

There are 10 sets, and each set includes 10 subitizing slides and 1 challenge pattern.  In between each slide, I’ve placed a blank slide.  As you click through the slides the effect will be that the slides are appearing and disappearing – at the rate that you choose.  The blank slide will also allow you to toggle back and forth to an image or simply move forward to the next image.

Then, after 10 quick subitizing experiences, you’ll see one challenge image which will be duplicated several times on the screen.

Download the sets, try them out in your classroom, and let me know how it goes!


Downloadable PowerPoint Slide Sets

Subitzing Set 1 – and Challenge Image #1

Subitizing Set 2 -and Challenge Image #2

Subitizing Set 3 – and Challenge Image #3

Subitizing Set 4 – and Challenge Image #4

Subitizing Set 5 – and Challenge Image #5

Subitizing Set 6 – and Challenge Image #6

Subitizing Set 7 – and Challenge Image #7

Subitizing Set 8 – and Challenge Image #8

Subitizing Set 9 – and Challenge Image #9

Subitizing Set 10 – and Challenge Image #10



If you want a tool to create your own challenge patterns, take a look at How to Create 9 Identical Dot Patterns in 10 Seconds or Less.


After reading this blog post, take a look at  THE 12 MOST POPULAR MATH STRATEGIES AND DOWNLOADS ON THIS BLOG.


All my best,






  1. Hannah on January 5, 2021 at 2:44 pm

    How would you recommend using the subitizing slides on Zoom when the students can’t all be unmuted to say the number otherwise there’s a terrible echo.

    • Steve Wyborney on January 5, 2021 at 8:22 pm

      Hi, Hannah. Great question. The students can still all subitize when they see the image. Of course, after that, they won’t all be able to tell you the number aloud due to the microphones. I know there are a lot of other strategies including jotting down the number or showing it to you in another way. Another option would be to use fewer of the subitizing slides (perhaps 10 instead of 5) before moving into the challenge pattern where you would spend more time.

  2. Kristen on November 22, 2020 at 9:09 pm


    First of all THANK YOU!!!!!!!!!! Your slides are so amazing! I teach grade 5 and stumbled across your site this year, and was so happy. I started with Esti-mysteries and my class loves it.

    My question is….. With all of your resources, do you suggest a schedule at all? As in, which things to start with? Is there any scaffolding at all? Or do they all go hand in hand.

    Thank you so much. I am just trying to make some schedule to follow. I started with Mystery Monday… with esti mysteries. I would like to work in the multiplication course as well, my students are quite low, and even though are in grade 5, they can really benefit from it.


    • Steve Wyborney on November 23, 2020 at 10:51 am

      Hi, Kristen. You are certainly welcome, and I appreciate your kind words. I recommend establishing a routine that works for you. For example, your Mystery Monday sounds like a great routine. I know that some are doing some on Wednesdays or Fridays. You could also blend the approaches and have a Mystery Monday and a Clipboard on Wednesday and a Splat on Friday or something like that. Really, the resources are available to use in whatever way work best for you so feel free to try some different approaches. In general, the estimation clipboards are a little shorter – in terms of how long they take – than the Esti-Mysteries so if you have a day with more limited time then I would recommend a clipboard on those days. As far as the scaffolding I’ve tried to build that in to all the resources so you’ll have that available. Simply present the resources on the days that work best for you, ask rich questions, and let your students amaze you with their ideas.

  3. Niwa on November 10, 2020 at 6:20 pm

    Thank you so much! Your resources are amazing!! And I’m so glad to find your website!!

    • Steve Wyborney on November 15, 2020 at 11:26 am

      I’m so happy you found it, and I’m grateful for this message!

  4. Danny on November 4, 2020 at 9:16 am

    This resource is excellent for remote learning in Kindergarten! Merci! Thanks so much for sharing.

  5. Penny greenler on August 20, 2020 at 4:29 am

    So generous to share…thanks

    • Steve Wyborney on August 20, 2020 at 6:48 am

      My pleasure, Penny!

  6. Maria Torres on July 14, 2020 at 11:31 am

    Wow! You are great!!! Thank you for the free slides. The resources are very fun for my Kinder students. THANK YOU!!!!

  7. Jillian on March 2, 2020 at 6:49 pm

    Thank you so much for your amazing ideas and creativity to make maths meaningful, engaging, challenging and fun for my students. My students have loved SPLAT and esti mystery. I now have younger ones this year so subitizing will also be a wonderful resource.

    • Steve Wyborney on March 2, 2020 at 7:48 pm

      My pleasure, Jillian! I really appreciate the comment!

  8. Donna on February 8, 2020 at 11:40 am

    Thank you for all the wonderful work you share! I really appreciate it and look forward to seeing your posts.

  9. Joshua Boden on November 15, 2019 at 4:34 am

    Steve I just wanted to say that I think you’re an amazing person. I’ve followed you for several years and the things you have done to enrich teachers understanding of how math should be taught is inspirational. Thank you for all you have done and continue to do.

    • Thuy Nguye on April 19, 2020 at 10:51 pm

      Thank you for sharing this amazing math talk. I am teaching Kindergarten and now it’s Distance Learning. I am going to integrate your number pattern subitizing with my students via Zoom. It will be a meaningful math discussion for remote learning.

  10. Stephen on October 22, 2019 at 10:48 am

    Hi Steve, Thank you so much for this usable material. I really appreciate it. As a kindergarten teacher, this is great. An interactive lesson, discussion and involved children. What more could one ask for? Thanks

    • Steve Wyborney on October 24, 2019 at 6:47 am

      My pleasure, Stephen. I’ll keep them coming!

  11. lanae goates on October 21, 2018 at 3:20 pm

    these are amazing! I’m excited to use them! Thank you for sharing

  12. Kristin on October 11, 2018 at 8:31 pm

    This is an amazing site! Thank you for sharing these wonderful resources. Subitizing is an essential skill for our students. These slides will make it fun for my students and simple for me!

  13. Rui on October 9, 2018 at 1:54 pm

    Thank you these are awesome

  14. Daftar Judi Sabung Ayam on October 6, 2018 at 11:10 am

    Excellent goods from you, man. I’ve understand your stuff previous to and you are just
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    This is actually a terrific website.

  15. Janet on October 3, 2018 at 1:09 pm

    I can’t wait to share these with my primary teachers. Thanks for making them available!

  16. Cathleen Peterson on October 2, 2018 at 4:31 pm

    I figured it out! Thank you SO MUCH for sharing your resources! My students love Splat! The subitizing slides are going to make my life so much easier. I truly appreciate these resources.

  17. Toni Montgomery on October 2, 2018 at 3:14 pm

    Steve Thank you. The links are working now

  18. Danyn on October 2, 2018 at 2:15 pm

    The links are working! Thanks Steve

  19. JoAnn Mattos on October 2, 2018 at 1:22 pm

    The best part about these is that the kids love them! They are engaged and excited about discussing the math contained on them!! Thank you so much!!

  20. Amy Keller on October 2, 2018 at 3:48 am

    Thank you!

  21. Roslyn Wikoff on October 1, 2018 at 10:46 pm

    What another amazing resource! Thank you so much for sharing! I shared with all K-2 teachers at my school!

    • stevewyborney@gmail.com on October 9, 2018 at 6:41 am

      Thanks, Roslyn!

  22. Meghan on October 1, 2018 at 8:00 pm

    Thank you so much ! Your resources are Amazing

  23. Jane P on October 1, 2018 at 4:45 pm

    I was able to download all ten sets! Thank you so much for all you do. It is so generous of you to share all your work! My students and I LOVE the SPLAT!

  24. Dan Kearney on September 30, 2018 at 8:48 pm

    Steve, the sets are not available for downloading from the email or your webpage. Dan

    • stevewyborney@gmail.com on September 30, 2018 at 8:49 pm

      Hi, Dan. Can you try it now and let me know if the links are live?

  25. Martha Molls on September 30, 2018 at 8:38 pm

    Hi Steve. The sets are not linked to a download from this site or the side sites.

    • stevewyborney@gmail.com on September 30, 2018 at 8:50 pm

      Hi Martha. I just updated the links. Can you see if it will work for you?

  26. Linda Striegel on September 30, 2018 at 8:37 pm

    I can’t download. Could you please check the link. Thank you

    • stevewyborney@gmail.com on September 30, 2018 at 8:51 pm

      I think it’s working now, but please let me know. Thanks!

  27. Tammy Eastep on September 30, 2018 at 8:36 pm

    Hi Steve,
    I have used and LOVED your SPLAT slides. Where can I purchase the subitizing slides?


    • stevewyborney@gmail.com on September 30, 2018 at 8:52 pm

      Hi, Tammy. They are all free. The links should be active now so you can download them. Thanks for the kind words!

  28. Victoria on September 30, 2018 at 8:33 pm

    Thanks for everything you share! I love your resources. I would love to try out your subsidizing activities, but cannot find a way to download the slides. I don’t see a link in the email or on your blog. Can you advise?

    • stevewyborney@gmail.com on September 30, 2018 at 8:52 pm

      Hi, Victoria. Go ahead and try it again. I think the links are all updated now. Thanks!

  29. Angela on September 30, 2018 at 8:30 pm

    I’m interested in your subitizing slides, but the links are not active.

    • stevewyborney@gmail.com on September 30, 2018 at 8:53 pm

      Hi, Angela. I believe they are all ready to go now, but would love some feedback on if they are set and working. Thanks!

      • Drew Sedrel on October 4, 2018 at 11:08 am

        Hey, your links are working now. Thank you so much!

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