1,000+ Number Theory Lesson Plans Reviewed by Teachers

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Adding Mixed Numbers

Students, through a teacher led lesson, are introduced to and then practice adding mixed numbers. They solve the problems on the worksheets and show all their work.

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Grades:: 5th

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Reviewing Number Theory

Students solve problems using the following concepts: fractions; multiplying by 10,100, 1,000, etc; exponents and bases; roots; scientific notation; and ordering numbers.

Overall Rating:
Grades:: 4th - 6th

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Number Theory: Factor Game

Students will use a game setting to identify the properties of prime, composite, abundant, deficient and perfect numbers. Students learn that they can score more points by picking certain numbers.

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Number Theory: Once In A Blue Moon

Students will use number theory skills to investigate when certain planets are aligned. Students review the order of the planets from the sun and use this data to create a human solar system. They are assigned the name of a planet, and physically demonstr

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Theory, Theory, Who's got the theory?

Students analyze 5 separate theories of evolution in order to help them explain the different meanings of theory, how human values influence science, and that the scientific view of the origin of life does not involve supernatural forces.

Overall Rating:
Grades:: 8th - 12th

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Number Theory I

Students examine the importance of our number system. They listen to the book, 'The Very Hungry Caterpillar,' write numbers in Mayan, Egyptian, and Roman, and demonstrate how many steps there are without using numbers in their explanation.

Overall Rating:
Grades:: 3rd

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Number Theory

Students receive a copy of a vocabulary list. They work together or alone to complete examples for each definition. They add their own examples to the class list once the activity is finished.

Overall Rating:
Grades:: 4th - 6th

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Perfect Numbers

Students classify numbers as abundant, deficient, or perfect based on the relationship between the number and its factors. They review factor game using the completed lab sheet. When playing the factor game which type of numbers where the best for you to choose? Which type of numbers were the worst for you to choose? Students discuss possible strategies for determining all of the proper factors of a given number.

Overall Rating:
Grades:: 6th

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Number Theory -- Primes vs. Composites

The students participate in a prime vs. composites game in which they define prime number, composite number, and integer. They investigate working with multiples to discover prime/composite patterns.

Overall Rating:
Grades:: 5th - 6th

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The Straddling Checkerboard

Students, through teacher explanation and guided practice, discover the process involved in using a straddling checkerboard cipher (an encryption method that converts letters and symbols into numbers.) They work together to solve or decipher a given code.

Overall Rating:
Grades:: 9th - 12th

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