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2nd Grade Christmas Activity: Christmas Math Mystery - Selfish Elf CSI

Rated 4.87 out of 5, based on 1549 reviews
4.9 (1.5k ratings)
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Mrs J's Resource Creations
31.3k Followers
Grade Levels
1st - 3rd, Homeschool
Resource Type
Standards
Formats Included
  • Zip
  • Google Appsâ„¢
Pages
16 pages
$4.50
$4.50
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Mrs J's Resource Creations
31.3k Followers
Includes Google Appsâ„¢
The Teacher-Author indicated this resource includes assets from Google Workspace (e.g. docs, slides, etc.).

What educators are saying

My students got a kick out of using this for our math time before Christmas. It was a fun way to review some of our math skills.
My students and I are a big fan of these math mysteries. They love the video hook and ending. If you have not tried one, you should. Just plan on wanting more!! They are perfect for second grade. They are a bit challenging but most students can work them independently.
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  4. Christmas Math Mystery differentiated bundle for Kindergarten through to 7th Grade - The Case of the Selfish Elf! This download includes all of the grade editions available for this math mystery story packet.You can Clue Swap across the 2nd-7th grade editions to customize/differentiate the math in t
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Description

This Christmas Math Mystery, the 'Case of the Selfish Elf' (2nd Grade Edition) will add an exciting twist to your math sessions. Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.

Distance Learning Update: I've added a Word Document within the folder that contains a Google Slides link to share this resource with your students via Google Classroom or Drive. Parts of the pages are editable so that your students can complete themwithout having to print the pages. Please note, you will need to make a copy of the Google Slides to your drive before you can edit.

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There is an optional Video Hook available to introduce this activity to your students in a fun way

>> CLICK HERE TO VIEW BONUS VIDEO HOOK <<

Includes a Bonus ending video clipto wrap up the case after solving the mystery!

Students must use their math skills to eliminate suspects so they can find out who is the Selfish Elf?

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Preparation

- No Prep required! Print the student pages, staple or place

in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the

lesson on an IWB, iPad, or computer monitor screen.

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Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

Clue 1: Skip-Counting Sequences (2s, 5s, 10s)

Clue 2: Place Value of the Underlined Digit (Hundreds, Tens, Ones)

Clue 3: Add 3 One-Digit Numbers

Clue 4: Subtracting One-Digit Numbers from Two-Digit Numbers (without regrouping)

Clue 5: Time (O'Clock, Half Past, Quarter Past, Quarter To)

Students must use critical thinking skills to figure out what the clue is telling them to eliminate from the list of elf suspects.

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Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "we must learn something new before attempting the next clue."

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How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format, as well as how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

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Want different math skills?

The Case of the Selfish Elf is available in the other Grade editions listed below. Click to check out the math skills covered in each packet.

Christmas Math Mystery: Case of The Selfish Elf (GRADE 1)

Christmas Math Mystery: Case of The Selfish Elf (GRADE 2)

Christmas Math Mystery: Case of The Selfish Elf (GRADE 3)

Christmas Math Mystery: Case of The Selfish Elf (GRADE 4)

Christmas Math Mystery: Case of The Selfish Elf (GRADE 5)

Christmas Math Mystery: Case of The Selfish Elf (GRADE 6)

Differentiation and Important Note about the other Grade Editions when the Mystery is the SAME Story Title:

The clues are the same in the other grades if the mystery story is the same. The math is what is different between the grade packs. I designed the mysteries this way to enable differentiating the task within your classroom (without your kids knowing that they might have an easier or harder version than their peers.) You can also 'clue swap' across grades (except for the Kindergarten & 1st grade version) as long as the clue number is the same if you find that you'd prefer the math skill for a particular clue from a different grade edition. For example, swap clue 3 from the 4th grade edition with clue 3 in the 5th grade edition and it will still work the same (just the math will be different). I've added an alternative suspect list to the pack to change the mystery outcome, including two pre-made lists for you to swap out if you want a different mystery solution.

There are many different mystery titles in my store available if you'd like more Math Mysteries with different clues and solutions.

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Add extra motivation with this Detective Rank Chart Download the Mystery Record & Rank Chart FREEBIE HERE

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You may also like:

Christmas Reading Mystery: Once Upon a Crime - Rescue Rudolph!

New Year Math Mystery: Case of The Millennium Bug (GRADE 2)

Bundle and Save!

COMPLETE Math Mystery Bundle for GRADE 2

HOLIDAY Math Mystery Bundle {GRADE 2}

SEASONS Math Mystery Bundle Pack (GRADE 2)

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Not sure what a math mystery is? CLICK HERE to watch a video about Math Mysteries

TRY A FULL FREE MATH MYSTERY HERE (GRADES 1 - 6 DIFFERENTIATED BUNDLE)

Browse the 2nd Grade Range:

>>Download the FREE 2nd Grade Math Mystery Checklist here<<

>> CLICK HERE to follow my store <<

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For more ideas, activities, and resources, follow my store (by clicking the little green star) to stay updated on new releases. We can also stay connected via:

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>> CLICK HERE to follow my store <<

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Thank you!

Mrs. J.

(c) 2016

Total Pages
16 pages
Answer Key
Included
Teaching Duration
N/A
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Standards

to see state-specific standards (only available in the US).
Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
Count within 1000; skip-count by 5s, 10s, and 100s.
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

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