To access your purchased materials,

simply click Login and enter your purchase email and password.

  • $149

2021-2022 Esti-Mysteries and Estimation Clipboards (posted October 2021-May 2022)

  • Download
  • 10 files

140 Esti-Mysteries and 36 Estimation Clipboards are included in this set of downloadable materials. In 1 quick download, you'll have EVERY Esti-Mystery and EVERY Estimation Clipboard that was posted during the 2021-2022 school year (from October 2021-May 2022). Esti-Mysteries are also organized by levels - in separate files - within the zip file you download!

  • $149

2022-2023 Esti-Mysteries and Estimation Clipboards (posted October 2022-May 2023)

  • Download
  • 11 files

160 Esti-Mysteries and 14 Estimation Clipboards are included in this set of downloadable materials! In 1 quick download, you'll have EVERY Esti-Mystery and EVERY Estimation Clipboard that was posted during the 2022-2023 school year (from Oct. 2022-May 2023). All 16 Three-Container Estimation Routine Sets are included! Esti-Mysteries are organized by levels - in separate files - within the zip file you download!

  • $149

2023-2024 Esti-Mysteries (The 100 Esti-Mysteries from October 2023-May 2024)

  • Download
  • 12 files

100 Esti-Mysteries are included in this set of downloadable materials! In 1 quick download, you'll have EVERY Esti-Mystery that was created during the 2023-2024 school year (from Oct. 2023-May 2024). This includes all 90 that were posted on my blog and 10 exclusive Esti-Mysteries that are only available in this bundle. Esti-Mysteries are organized by levels - in separate files - within the zip file you download!

  • $149

2024-2025 Esti-Mysteries (The 110 Esti-Mysteries from October 2024-May 2025)

  • Download
  • 12 files

110 Esti-Mysteries are included in this set of downloadable materials! In 1 quick download, you'll have EVERY Esti-Mystery that was created during the 2024-2025 school year (from Oct. 2024-May 2025). Esti-Mysteries are organized by levels - in separate files - within the zip file you download!

  • $149

2025-2026 Esti-Mysteries (The 125 Esti-Mysteries from September 2025-May 2026)

  • Download
  • 12 files

125 Esti-Mysteries are included in this set of downloadable materials! In 1 quick download, you'll have EVERY Esti-Mystery that was created during the 2025-2026 school year (from Sept. 2025-May 2026). Esti-Mysteries are organized by levels - in separate files - within the zip file you download!

About the Author

Steve Wyborney is an award-winning educator. During his 31 years in education, he has been an elementary classroom teacher, an instructional coach, and a district math coach.


He is the creator of Esti-Mysteries, Splat!, Leaping Numbers, and many more resources.

Steve is well known for his use of instructional technology, his love of mathematics and his passionate belief in the exceptional potential of every student.  


2005 Oregon Teacher of the Year

Author of 15 books

Conference & Keynote Speaker


Steve also served as a...

Teacher Advisor for Scholastic Book Clubs

BrainQuest Math Teacher Advisor



Steve has given away over 10,000,000 free copies of his math resources - to educators around the world - and constantly searches for new ways to empower fellow educators.