Number Theory Teacher Resources

Second graders create Mystery Numbers. They give the class clues about the name, value, and multiples of the digits which make up the number.

Seventh graders calculate percentages, convert fractions to decimals, and decimals to fractions using information from a basketball game.

Ninth graders express mathematical properties through creation of advertising jingles.

Ninth graders explore mathematical properties through the use of an advertising jingle. They produce a commercial that is digitized and presented to the class. Students write a jingle that simplifies each property and helps classmates...

Students study

Students investigate the associative property of addition. In this associative property of addition lesson, students work in pairs and build addition problems with six blocks. They sit on either side of a desk so that they can "read" the...

Learners explore patterns in everyday life and in the mathematic world. They create various concrete examples of patterns and verbally describe these patterns to a fellow student.

Fifth graders discover the connections between algebra and geometry. With a focus on arrays and factors, they are introduced to multiplication. They develop an array for multiples of 2 through 10 and identify the factors of each row....

In this sequence learning exercise, learners find the arithmetic and geometric sum of given sequences. They identify the next number in a sequence. This three-page learning exercise contains eight problems.

Seventh graders use the World Wide Web for research, identify fractions found in everyday life by finding a recipe that uses fractions.

Students map data on employment in wood products manufacturing in Oregon counties. In this Oregon forest instructional activity, students discover the percentage of people employed in the forest manufacturing industry. Students create a...

In this math notes worksheet, students fill in the definition and example for terms having to do with different types of factors. Students complete 14 terms.

Second graders examine the commutative property of addition and the property of zero in addition and subtraction. They complete an asessment worksheet to gain practice reading and working number sentences horizontally and vertically.

Eighth graders find the length of the third side of a right triangle.

Eighth graders convert the price of US stamps to those of a number of foreign currencies. They use conversion charts to make the changes.

Learners create projects on Astronomy using math concepts and use of Internet resources.

Seventh graders compile a table of the revenues of the 8 eateries (a combined total), Main Gate admissions, and the Gift Shop.

Students plan a voyage as the captain of a tall ship in the early days of exploration and merchant trading. They choose 2 ships and 3 voyages for a total of 6 possibilities. They calculate the number of days and distance of their...

Learners locate the many forests located in Oregon. In groups, they use the internet to research employment data on wood products made in the state. They discuss how looking at information presented in a different way can change their...

Students complete 6 units to learn about Ancient Greece and the Olympic games through physical education activities as well as math activities. In this Ancient Greece lesson, students complete multiple activities in 6 lessons including...

Practice using your graphing calculator for number theory problems, including prime factorization, greatest common factor, least common multiple, and scientific notation. If you get stumped or if you would like to check your work, then...

An attempt at an optimal trial division primality test using the Sieve of Eratosthenes.

Why is factorization hard, yet generating primes easy? Where do we go from here?