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(26 MB|17 pages)
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1. Math Mysteries the COMPLETE collection for 1st Grade. This complete math mystery bundle contains all of my math mysteries for Grade 1 up to date! Make math fun and exciting with these engaging activities that will motivate even some of your most reluctant learners.MULTIPLE USESUse as a classroom rev
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2. This Complete Math Mystery Tri-Grade Bundle contains all of my math mysteries currently in the range available for Grades 1, 2, and 3! Make math fun and exciting by adding a mystery twist to your worksheets. Your students will gain lots of math practice, while also developing their critical thinkin
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• Product Description
• StandardsNEW

In this Addition Math Mystery – Case of The Angry Adder, students will be using their adding doubles and near doubles skills to discover important clues! Easy prep! Just Print & Solve! Or go paperless with the new Google Docs option provided within your download.

Engage and motivate your students during math time with this fun addition activity!

Optional VIDEO HOOK now available as a fun option to introduce this activity to your students. A written story is included within the PDF file if you wish to use instead. Video hook can be viewed in the thumbnail preview section or <CLICK HERE to VIEW Video Hook

Students must use their addition math skills to discover which item can be used to capture the Angry Adder!

There are five clues to crack to solve the mystery:

Clue 2: Adding Doubles and Near Doubles

Clue 3: Complete the Addition Sentence (1-20)

Clue 4: Addition (Sums to 20)

Clue 5: Adding Three Numbers (1-digit numbers only)

Pack also includes a mystery declaration sheet, answer sheets, elimination guide, and awards.

Great activity for extra practice/review, enrichment, assignments, or early finishers.

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. I highly 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." There are lots of ways to implement this activity in your classroom, learn more in the blog post link below:

Read Blog Post: Five Easy Ways to use Math Mysteries in your Classroom.

This Addition focused Math Mystery activity is available in versions for GRADES 1-5! Click the links below to find out the specific addition skills covered in each level:

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

Bundle and Save!

COMPLETE Math Mystery Bundle - 1st Grade

Holiday Math Mystery Bundle {GRADE 1}

SEASONS Math Mystery Bundle Pack (GRADE 1)

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Read Blog Post: FIVE Easy Ways to use Math Mysteries in your Classroom.

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

Browse the range of 1st Grade Math Mysteries HERE.

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Thank you!

Mrs. J.

Please note that the Grade 1 Math Mysteries cannot be 'clue swapped' with other Grade Math Mystery versions for customization/differentiation as you usually can with Grades 2-6.

Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = ▯ - 3, 6 + 6 = ▯.
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Apply properties of operations as strategies to add and subtract. If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
Total Pages
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