What to teach this month
Pick a month to see the cases that fit it. The number shows how many resources the store has for it.
Back-to-school week, sorted
First-week routines, review that catches the summer slide, and getting-to-know-you cases.
60 back to school resources in the store
A back to school week, sorted
- Day 1
Back to School Addition Word Problems Within 100 Math Detective Mystery - Day 2
Back to School 3 Digit Addition with Regrouping Math Detective Mystery - Day 3
3-Digit by 1-Digit MultiplicationDetective Mystery - Day 4
Addition & Subtraction Within 1000Detective Mystery - Day 5Free choice: any case from the 60
September is for routines
Fall cases to start the weekly mystery habit and get centers running.
4 fall resources in the store
Halloween, minus the chaos
Spooky enough to win the room, real enough to cover the standard.
56 halloween resources in the store
A halloween week, sorted
The short week that runs itself
Thanksgiving cases for the days before the break.
19 thanksgiving resources in the store
A thanksgiving week, sorted
December review without the fuss
Christmas cases that review the first half of the year.
34 christmas resources in the store
A christmas week, sorted
New year, new routines
Winter cases to get everyone back into the swing after the break.
33 winter resources in the store
A winter week, sorted
- Day 1
Winter Addition & Subtraction CSI Mystery WorksheetsThe Big Freeze - Day 2
Winter 3 Digit Addition with Regrouping Mystery Detective Activity - Day 3
2-Digit Addition with RegroupingDetective Mystery - Day 4
Winter Addition & Subtraction CSI MysteryThe Snow Day Snowman - Day 5Free choice: any case from the 33
Winter Multiplication & Division CSI Mystery Worksheets
The Gingerbread HouseSee the case file →
Multiplication 10x Times Tables Digital Escape Room
WinterSee the case file →
2-Digit Addition & Subtraction Digital Escape Room
WinterSee the case file →
Multi-Step Equations with Variables on Both Sides Digital Escape Room
WinterSee the case file →February fun that still counts
Valentine's Day cases that are still a real lesson.
17 valentine's resources in the store
A valentine's week, sorted
Test prep that doesn't feel like it
St. Patrick's Day cases and spiral review ahead of testing.
15 st. patrick's resources in the store
A st. patrick's week, sorted
St. Patrick’s Day Multiplication & Division CSI Mystery Worksheets
The Lucky ShamrockSee the case file →
4-Digit Subtraction with Regrouping
St Patrick's DaySee the case file →
4-Digit Addition with Regrouping
St Patrick's DaySee the case file →
3-Digit Addition with Regrouping
St Patrick's DaySee the case file →Spring into review
Easter, spring and Earth Day cases.
34 spring & easter resources in the store
A spring & easter week, sorted
Order of Operations (No Exponents / PEMDAS)
SpringSee the case file →
Easter Multiplication & Division CSI Mystery Worksheets
The Missing Easter EggsSee the case file →
Easter Digital Escape Room
Spring Math GameSee the case file →
Earth Day Addition & Subtraction CSI Mystery Worksheets
The Missing Recycling BinsSee the case file →Finish the year strong
End-of-year review and summer cases for the last few weeks.
35 end of year resources in the store
A end of year week, sorted
Summer Growth Mindset Digital Escape Room
Beach AdventureSee the case file →
Summer Addition & Subtraction CSI Mystery Worksheets
Who Stole Summer?See the case file →
Summer Addition & Subtraction CSI Mystery Worksheets
The Missing Hot DogsSee the case file →
Summer School Addition & Subtraction CSI Mystery Worksheets
The Missing TeacherSee the case file →Open your locker
From pre-K to high school. Each grade has its own page with every skill in the standards, the posts that teach it, and the cases that practice it. Or pick a subject below.
Or find your subject
Or browse a collection
Case of the Week
A five-minute warm-up to put on the board. Read each clue, cross off the suspects it rules out, and see who's left. New suspects every time you play.
Read it today, teach it tomorrow
Practical posts from a teacher who has taught every grade. Ideas you can use tomorrow, with a free page in most of them.
St. Patrick's Day Activities, and the March Review Before Testing
March is the last clear run before state testing. A St. Patrick's week plan, plus the review days around it, for Grades 1–8.
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February Activities That Still Teach: Groundhog Day, the 100th Day, Valentine's Day and Presidents' Day
Four holidays in the shortest month. A date-by-date plan with self-checking math cases, reading mysteries and digital escape rooms for K–9.
In this post How do you teach through four holidays in one month?A February plan, date by dateGroundhog Day activities, February 2100th day of school activities for K to 2Valentine's Day math cases, and the standard under each oneCases in this post
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Winter Activities for the First Week Back: A January Reset Plan
The first week of January is a review week, not a fresh start. A first-week-back plan for winter math and reading that puts December...
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Christmas Activities for the Last Three Weeks Before Break
December is long but keeps getting interrupted. A three-week plan for Christmas math and reading that still teaches: one self-checking case a day, a...
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Thanksgiving Week Activities That Still Teach: A Three-Day Plan
Thanksgiving week is two or three days. Spend them on review that checks itself: a math case, the real history of the holiday, and...
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Halloween Activities That Are Still a Real Lesson
Most Halloween activities pause the lesson. A mystery only resolves if the math or reading is right. Real cases, real reviews, Grades 1–10.
Read the post →The Number Cadets books
Printed books of real grade-level math, every page a case. Two out now, more on the way.
Addition & Subtraction Detective WorkbookGrades 2–3 · Ages 7–930 cases of 2- and 3-digit addition and subtraction with regrouping. Solve the problems, clear the suspects, catch the culprit.Buy on Amazon · $13.99 ↗
Christmas Detective Advent Calendar Puzzle BookAges 7–10A case a day through December: 30 whodunits, math games, logic puzzles and brain teasers in Hollyberry Village.Buy on Amazon · $13.99 ↗
Paperbacks printed and shipped by Amazon. Every page is a case, with the answer key in the back.
62 suspects. One of them did it.
Kiwiland's own cast, drawn for the cases. They turn up in the games, the cases and the packs. Tap anyone to open their file.
Put a game on the board
Whole-class games you project and play together. No logins, no student accounts, nothing to set up.
Detective Stuart"I make the worksheets I wished I'd had as a teacher."
Hi, I'm Stuart. I taught for over 20 years, at every grade level, and spent years as a teaching principal in small rural schools where one teacher has to reach every kid in the room. That's where the mysteries came from: practice that checks itself, so students know the moment they're on the wrong track.