Learn and write about the sequence of events in the life cycle of an apple tree. In this lesson, students will learn and write about the sequence of events in the life cycle of an apple tree.

What makes a tree a tree? Or rather, why can we recognize trees in even quite abstract depictions when they are so varied in nature? Researchers have found a clue in the branches, and used math to ...

The Markov numbers reveal the secrets of irrational numbers and the patterns of the Fibonacci sequence. But there’s one question about them that has resisted proof for over a century. Most people are ...