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Lesson Plan
Curated OER

Math Magic

For Teachers 3rd - 5th
Learners work in pairs, and take turns pretending to be a magician. There are a set of instructions for the magician to follow. A penny and a dime are used, and odd and even numbers are employed for multiplying. There is also a nifty...
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Worksheet
Curated OER

Six numbers Trick

For Students 9th - 11th
In this Algebra I/Algebra II worksheet, students analyze the algebra behind a number trick involving consecutive numbers.  The one page worksheet contains one problem with an explanation of the algebra behind the problem. 
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Worksheet
Curated OER

Some Number Tricks

For Students 6th - 8th
In this number tricks learning exercise, students practice 4 number tricks.  Students pick a number and perform various operations.  Students always end up with the same number.
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Worksheet
Curated OER

Number Trick

For Students 9th
In this Algebra I/Algebra II worksheet, 9th graders explore the algebra behind a number trick.  The one page worksheet contains one problem with the explanation and solution. 
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Lesson Plan
Curated OER

Magic Tricks with Numbers

For Teachers 3rd - 5th
In this magic tricks with numbers worksheet, young scholars learn three tricks involving addition, subtraction, multiplication and division of simple numbers as a magic trick.
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Worksheet
Curated OER

Number Trick

For Students 9th - 12th
For this secondary mathematics worksheet, students follow the provided steps to perform a number trick in which the solutions spells April fool.  The one page worksheet contains one problem.  The solution is not provided. 
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Lesson Plan
Curated OER

More Number Tricks

For Teachers 4th - 7th
In this more number tricks worksheet, young scholars study and analyze how to use symbols to set up and solve problems. Students follow twenty directives to solve several word problems.
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Activity
National Council of Teachers of Mathematics

The Math Forum: K 12 Math Problems, Puzzles, Tips & Tricks

For Students K - 1st
At this site us these tips & tricks to help students become better mental mathematicians.
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Unit Plan
Other

Curious math.com: Math Is an Attitude

For Students 9th - 10th Standards
This site offers numbers tricks to help multiply and divide large numbers mentally. There are also tricks for powers and roots of numbers.
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Activity
National Council of Teachers of Mathematics

The Math Forum: Number Tricks

For Students 7th - 9th
This site from the Drexel University gives a few number tricks and asks for you to make a number trick of your own, it really is not difficult, yet to the non-math oriented seems like magic.