A collaborative number quest challenges third graders to strengthen their understanding of patterns, multidigit addition, and number operations.

These evidence-based instructional strategies can lead to deeper mathematical conversations in upper elementary school classrooms.

Try these four growing-pattern strategies to teach algebraic thinking in elementary school.

Observe how first graders can learn to routinely theorize and explain their thinking about odd and even numbers, factors, multiplication, and skip counting.

Composing and decomposing small sets of objects can allow young students to see the whole group as well as the subsets that created the whole.