Students inspect divisibility rules. In this divisibility rules lesson, students study the relationship between factorization and the divisibility rules for 2, 3, 5, 6, 9, and 10. Students read One Hundred Hungry Ants and A Remainder of...

In this online interactive number sense learning exercise, students examine a series of 1 and 2-digit numbers. Students identify the even numbers in the series and check their answers.