Learners discover the Sieve of Erathosthenes. They explore a method to find all the prime numbers in a group of numbers. Using models, students practice divisibility rules while examining the difference between prime and composite numbers.

Learners play Divisibility Buzz to reinforce divisibility rule for three.

First graders analyze politics by participating in a class rules lesson. In this democracy lesson, 1st graders identify several class and school rules they dislike and conduct discussions to examine if they should be changed or not....

Third graders understand the role of rules and laws in our daily lives. They research the basic structure of the United States government. They participate in a simulated City Council meeting.