This school year I’m creating and sharing 100 new Esti-Mysteries.

You can download your copies by using blue download links below.

I hope these bring joy and rich math talk to your classroom!

New This Week!

Tuesday, March 19, 2024

Kindergarten:  Esti-Mystery 0103  –  “More or Less” 

Grades 1-2:  Esti-Mystery 1120  –  “Colorful”

Grades 3-8:  Esti-Mystery 3119  –  “Double Time”

Thursday, March 21, 2024

Grades 1-3:  Esti-Mystery 2114  –  “Rolling the Digits”

Grades 4-12:  Esti-Mystery 4083  –  “You Half to Find the Clue”

 

Tuesday, March 5, 2024

Kindergarten:  Esti-Mystery 0102  –  “Puzzle Pieces”

Grades 1-2:  Esti-Mystery 1119  –  “The Red Puzzle Piece”

Grades 3-8:  Esti-Mystery 3118  –  “Multiple Puzzle Pieces”

Thursday, March 7, 2024

Grades 1-3:  Esti-Mystery 2113  –  “The Green Puzzle Piece”

Grades 4-12:  Esti-Mystery 4082  –  “Spell Check”  (updated 3.18.2024)

 

Tuesday, February 20, 2024

Kindergarten:  0100  –  “A Liddle More Than the Number of Letters in the Alphabet”

Grades 1-2:  Esti-Mystery 1117  –  “Lids”

Grades 3-8:  Esti-Mystery 3116  –  “Look in the Lid”

Thursday, February 22, 2024

Grades 1-3:  Esti-Mystery 2111  –  “Lids is Spelled with the Letter S”

Grades 4-12:  Esti-Mystery 4080  –  “If N is equal to 8”

Tuesday, February 13, 2024

Kindergarten:  Esti-Mystery 0099  –  “Star Pile”

Grades 1-2:  Esti-Mystery 1116  –  “Stars”

Grades 3-8:  Esti-Mystery 3115  –  “The Reverse Pattern”

Thursday, February 15, 2024

Grades 1-3:  Esti-Mystery 2110  –  “The Clue on the Top of the Stars”

Grades 4-12:  Esti-Mystery 4079  –  “A Scoop of Stars”

Other Resources

• Estimation Clipboards
• Splat! (PPT)
• The Fraction Splat! Series (PPT)
• Splat! for Google Slides
• The Mystery Number in the Box Videos
• 80 Cube Conversations

Tuesday, January 30, 2024

Kindergarten:  Esti-Mystery 0101  –  “Ice and Dice”

Grades 1-2:  Esti-Mystery 1118  –  “Ice-Sti-Mystery”

Grades 3-8:  Esti-Mystery 3117  –  “Is That a 6 in the Ice Cube?”

Thursday, February 1, 2024

Grades 1-3:  Esti-Mystery 2112  –  “We Put the Dice in the Freezer”

Grades 4-12:  Esti-Mystery 4081  –  “The Temperature was Dropping”

Tuesday, January 16, 2024

Kindergarten:  Esti-Mystery 0098  –  “Crayon Colors”

Grades 1-2:  Esti-Mystery 1115  –  “Three Colors Sitting Next to the Vase”

Grades 3-8:  Esti-Mystery 3114  –  “Clues and Colors”

Thursday, January 18, 2024

Grades 1-3:  Esti-Mystery 2109  –  “Bright Colors”

Grades 4-12:  Esti-Mystery 4078  –  “Ready to Draw”

Tuesday, January 9, 2024

Kindergarten:  Esti-Mystery 0097  –  “Tens” 

Grades 1-2:  Esti-Mystery 1114  –  “Clasps” 

Grades 3-8:  Esti-Mystery 3113  –  “Clues and Clasps” 

Thursday, January 11, 2024

Grades 1-3:  Esti-Mystery 2108  –  “A Bowl of Clasps”

Grades 4-12:  Esti-Mystery 4077  –  “The Difference Between the Clasps” 

Tuesday, December 12, 2023

Kindergarten:  Esti-Mystery 0096  –  “Wooden Beads”

Grades 1-2:  Esti-Mystery 1113  –  “How Many Beads?”

Grades 3-8:  Esti-Mystery 3112  –  “Multiple Clues”

Thursday, December 14, 2023

Grades 1-3:  Esti-Mystery 2107  –  “Bead Patterns” 

Grades 4-12:  Esti-Mystery 4076  –  “The Exponent and the Fraction” 

December 4-8, 2023

Kindergarten:  Esti-Mystery 0095  –  “Spring Rings” 

Grades 1-2:  Esti-Mystery 1112  –  “A Cup of Rings” 

Grades 3-8:  Esti-Mystery 3111  –  “Eliminate That Pair of Numbers”

Grades 1-3:  Esti-Mystery 2106  –  “If You Look Very Carefully” 

Grades 4-12:  Esti-Mystery 4075  –  “Factor In All The Clues” 

November 27 – December 1

Kindergarten:  Esti-Mystery 0094  –  “Fishing for Four”  

Grades 1-2:  Esti-Mystery 1111  –  “Fishing for Five”

Grades 3-8:  Esti-Mystery 3110  –  “Fishing for a Letter”

Grades 1-3:  Esti-Mystery 2105  –  “I Caught a Three”

Grades 4-12:  Esti-Mystery 4074  –  “A Fish With Exactly Four Factors”

November 13-17, 2023

Kindergarten:  Esti-Mystery 0093  –  “Whistles” 

Grades 1-2:  Esti-Mystery 1110  –  “Moustaches?” 

Grades 3-8:  Esti-Mystery 3109  –  “The Wide Vase of Whistles” 

Grades 1-3:  Esti-Mystery 2104  –  “The Tall Whistle Vase”

Grades 4-12:  Esti-Mystery 4073  –  “One Third of a Vase of Whistles”

November 6-10, 2023

Kindergarten:  Esti-Mystery 0092  –  “Three Colors and Three Clues” 

Grades 1-2:  Est-Mystery 1109  –  “Bean Bags”

Grades 3-8:  Esti-Mystery 3108  –  “Rounding Bean Bags”

Grades 1-3:  Esti-Mystery 2103  –  “Flat Objects Add Up Quickly”

Grades 4-12:  Esti-Mystery 4072  –  “Square Bean Bags”

October 16-20, 2023

Kindergarten:  Esti-Mystery 0091 Pencil  –  “Sharpener Shapes” 

Grades 1-2:  Esti-Mystery 1108  –  “The Clue Numbers are Clues” 

Grades 3-8:  Esti-Mystery 3107  –  “That’s One Sharp Pencil” 

Grades 1-3:  Esti-Mystery 2102  –  “Super Sharpeners”

Grades 4-12:  Esti-Mystery 4071  –  “Erasing Some Numbers”

October 16-20, 2023

Kindergarten:  Esti-Mystery 0090  –  “Pumpkin Patch”

Grades 1-2:  Esti-Mystery 1107  –  “Did the Vase Melt?” 

Grades 3-8:  Esti-Mystery 3106  –  “The Pumpkin Pattern”

Grades 1-3:  Esti-Mystery 2101  –  “Pumpkin Puzzle”

Grades 4-12:  Esti-Mystery 4070  –  “Three Brown Pumpkins”

The Numbering System Enters the Thousands!

Long-Time Esti-Mystery Fans will notice that the numbering system looks a little different now.  The files are now numbered in the thousands!  So, what happened?

When I started creating daily Esti-Mysteries, you might remember that it was a very difficult time for all of us around the world, and I made a promise to create a new resource for my blog readers (nearly) every day of the school year.  I emailed every day with a new resources and let you know “I’m sticking with you every day!” From that time on, I created a lot of Esti-Mysteries, at every level – and I kept creating the next year… and the year after that.  And the numbers grew…

When I started, the numbering system didn’t seem like it would ever run out of room.

The 100 Level Esti-Mysteries were for grades 1-2, and they had file names like this:  100, 101, 102,  …  145, 146, 147 …

The 200 Level Esti-Mysteries (for grades 1-3) had file names like this:  200, 201, 202,  …

That all worked fine until…

That all worked fine until the Esti-Mysteries reached numbers like this…   196, 197, 198, 199 …   ???

At that point, I realized the Esti-Mystery after 199 couldn’t be numbered 200, because that was already used at a different level.  So, this year I continued the numbering system with 4-digits.

The Esti-Mystery Numbers Pick Up Where Last Year Left Off

They simply begin with the level number in the thousands place.