UEN Security Office
Technical Services Support Center (TSSC)
Eccles Broadcast Center
101 Wasatch Drive
Salt Lake City, UT 84112
(801) 585-6105 (fax)
Students will use manipulatives to learn about composite and prime numbers.
For each student:
Students learned to classify whole numbers from 2 to 20 as composite or prime, and 0 and 1 as neither prime nor composite, in fifth grade.
Every whole number greater than 1 is either a prime or composite number. A prime number has exactly two factors, 1 and itself. A composite number has more than two factors.
Commutative property is the fact that changing the order of addends or factors does not change the sum or product (e.g., 4 x 7 = 28 and 7 x 4 = 28).
Rules of divisibility
1. Demonstrate a positive learning attitude toward mathematics.
2. Become mathematical problem solvers.
3. Reason mathematically.
Invitation to Learn
Pass out 12 centimeter cubes to each student. Have students make different shapes with the cubes. Share examples and point out examples and nonexamples of arrays. Write a definition of array as a class.
Start with lowest prime number (2).
If 2 will not work, move to 3, etc...
Students explain the Sieve of Eratosthenes to a family member.
Hatfield, M., Edwards, N., Bitter, G. & Morrow, J. (2000). Mathematics Methods for Elementary and Middle School Teachers. New York, New York. John Wiley & Sons Inc.
An activity-based approach to teaching with an emphasis on using manipulatives to build conceptual understanding! This valuable book combines practical teaching ideas, video examples, updated assessment techniques, and the NCTM Assessment Standards to give teachers all the background they need to introduce elementary and middle school students to the wonders of mathematics. Provides training and practicing teachers of kindergarten to the eight grade with ideas, techniques, and approaches to teaching mathematics such that their students will be prepared for later study.