Worksheet
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Logic Problems

For Students 3rd - 4th
Using the number attributes they have learned, math detectives uncover the mystery number in each of these logic problems. For the three problems they examine the clues and sets of numbers, using key vocabulary such as greater than,...
Worksheet
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Place Value Mystery Numbers

For Students 5th - 6th
For this math worksheet, students read and solve 4 story problems in which they figure out the mystery number. The clues tell students about how digits are placed. Students write the mystery number as the answer.
Lesson Plan
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The Missing Monkey Mystery

For Teachers 2nd
Second graders explore number values by completing number sentences. For this math functions lesson, 2nd graders identify whole numbers by using a visual aide and practice filling in the blank in number sentences. Students utilize their...
Worksheet
Curated OER

Box Mystery

For Students 1st - 2nd
In this math reasoning activity, learners read 4 clues that describe the capacity of 4 boxes. Students use reasoning to number the boxes from 1 to 4 as the clues are analyzed.
Lesson Plan
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Math: Mr. E Graphs

For Teachers 2nd
Second graders role-play as members of the "Math Graph Detective Academy" and assist in solving a mysteries. Once they have watched a "top secret" video, they sort objects according to traits into five categories. Throughout five...
Worksheet
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Nate's Fraction Hunt Mystery Message

For Students 1st - 3rd
In this Nate the Great activity worksheet, students follow the 6 fractional instructions and write the parts of each of the words to decode Nate's mystery message.
Lesson Plan
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Hands-On Investigation!

For Teachers 3rd - 6th
Learners read, analyze, and solve a mystery using problem-solving skills. They explore the History Detective website, discuss the difference between clues and red herrings, complete a dot-to-dot sheet, take notes in a detective...
Lesson Plan
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Giant Mystery

For Teachers 3rd
Third graders determine the relationship between hand size and body size using centimeters as the unit of measure, They use the relationship to find the size of a hypothetical giant. They graph the measurements using a spreadsheet program.
Worksheet
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Mystery Numbers

For Students 6th - 7th
In this mystery numbers worksheet, students solve 4 different word problems that include guessing numbers described. First, they determine a two digit number that has the sum equal to 6. Then, students determine a two digit number that...
Worksheet
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Holiday Math Mystery

For Students 1st - 3rd
In this holiday math mystery worksheet, students fill in fifteen missing numbers that makes each tree correct. Students then use the missing numbers in each tree to find the secret message shown.
Worksheet
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Riddles (Math Puzzles)

For Students 5th - 6th
In this math worksheet, students solve 4 math riddles in which the mystery number is determined. Students analyze the clues and name the mystery number.
Worksheet
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Halloween Addition Mystery Message

For Students K - 2nd
In this Halloween-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Christmas Addition Mystery Message

For Students K - 1st
In this Christmas-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Christmas Addition Mystery Message 2

For Students 1st - 2nd
In this Christmas-themed worksheet, students solve 44 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Christmas Addition Mystery Message 3

For Students K - 1st
In this Christmas-themed worksheet, students solve 14 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Thanksgiving Addition Mystery Message

For Students 1st - 2nd
For this Thanksgiving-themed worksheet, students solve 17 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Thanksgiving Addition Mystery Message 2

For Students 1st - 2nd
In this Thanksgiving-themed worksheet, students solve 17 problems that require them to add 1-digit numbers to 1-digit numbers. Students use their answers and the code box to reveal a mystery message.
Worksheet
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Christmas Math Message

For Students 1st - 2nd
In this subtraction practice worksheet, students solve 14 problems that require them to subtract 1-digit numbers from 1-digit numbers. Students use the answers to find out what the mystery message is.
Worksheet
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Split a Factor

For Students 2nd - 4th
Take the mystery out of multiplicaton with worksheets like this one. Learners find a mental math strategy for more difficult equations by splitting a factor, multiplying out the terms, and adding the products. An example explains this...
Worksheet
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Fourth of July Addition and Subtraction

For Students 2nd - 3rd
What is Thomas Jefferson signing? Focus on American history with this cross-curricular math puzzle. Learners utilize addition and subtraction skills to solve the mystery of the Fourth of July. All numbers are 3-digit, and there are no...
Activity
101 Questions

Coke Jacuzzi System of 3

For Students 9th - 12th Standards
Can you determine the exact volume of a bottle based on the relative volume of other bottles? A series of four videos shows someone pouring fluid into bottles. Scholars must set up a system of equations to determine how much each bottle...
Worksheet
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Missing Measures: Complimentary and Supplementary Angles

For Students 4th - 6th Standards
A missing measure mystery! Right angles and straight angles are divided in two, with the measure of one side provided. Angle analyzers compute the value of the missing complimentary or supplementary angle. There are eight problems for...
PPT
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Dividing Fractions

For Teachers 4th - 6th Standards
Dividing fractions can be a daunting task for young mathematicians. This presentation does an excellent job of taking the mystery away from the process, and leads pupils through the steps in a clear, concise manner. Four examples are...
Interactive
PHET

Function Builder

For Students 8th - 12th Standards
Build confidence about functions with the function builder. Pupils learn about functions and transformations using an interactive. A function machine transforms pictures, numbers, and equations based on a function rule. A mystery...

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