Power of Patterns Fractals. Fractals are defined as shapes that exhibit self-similarity and high complexity. These shapes appear in many different forms throughout nature. This high-interest nonfiction reader introduces students to fractals, and teaches them new concepts and vocabulary terms including fractal compression, Mandelbrot set, constructual law, logarithmic spiral, Archimedean spiral, dendritic patterns, and venation patterns on leaves. Developed by Timothy Rasinski-a leading expert in reading research-this purposefully leveled text guides students to increased fluency and comprehension of nonfiction