In this prime numbers instructional activity, 5th graders look over a list of numbers and cross out the 6 numbers that are not prime numbers. Students write 6 numbers as the sum of two prime numbers and 6 as the sum of three prime numbers.
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Number and Operations: Primes, Composites and Common Factors
Incorporate riddles into your math lesson by having students make tree factors and determine if the number is a prime or composite. They will also use other clues to find the answer to the riddle while sharpening their multiplication...
4th - 5th Math CCSS: Adaptable
Numbers in a Multiplication Table
Identifying patterns is a crucial skill for all mathematicians, young and old. Explore the multiplication table with your class, using patterns and symmetry to teach about square numbers, prime numbers, and the commutative and identity...
3rd - 5th Math CCSS: Designed
Prime Factorization and Product of Primes
Demonstrate a method for finding the prime factorization of numbers using factor trees and a video that explains how to break a number down to its prime factors. The instructor reinforces the concept of factors by displaying the number...
5 mins 3rd - 7th Math CCSS: Adaptable