IXL Science helps students build lasting critical thinking abilities. With IXL, they'll analyze data, build new vocabulary, and deepen their understanding of the world around them.

IXL is the world's most popular subscription-based learning site for K–12. Used by over 17 million students, IXL provides personalized learning in more than 17,000 topics, covering math, …

See all of the science topics available on IXL! From biology to chemistry, Earth science to physics, there's always something new to learn.

With IXL science, students learn about the world around them through engaging and interactive skills that will foster students' curiosity and build a lifelong love of science.

IXL is the world's most popular subscription-based learning site. Used by over 17 million students, IXL provides unlimited practice in more than 6500 math, English language arts and science …

Biology IXL offers dozens of Biology skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill …

Learn fourth grade science skills for free! Choose from over a hundred topics including plants, animals, energy, rocks and minerals, fossils, and more. Start now!

Learn fifth grade science skills for free! Choose from over a hundred topics including ecosystems, matter and mass, stars, and more. Start learning now!

Learn second grade science skills for free! Choose from dozens of topics including plants, animals, heating and cooling, earthquakes, and more. Start now!

Learn third grade science skills for free! Choose from dozens of topics including traits, fossils, magnets, weather, and more. Start learning now!