Biology Websites

Explore 15 curated biology websites for homeschoolers and educators. Each resource has been reviewed for quality before being listed.

Start here if you're looking to learn Biology online. Whether you're a beginner looking to learn biology terms or if you're looking to brush up on your knowledge, you'll find all the biology classes, tutorials, and courses you need here.

Biology 2e

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens....

Concepts of Biology

Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is mea...

Biology Homeschool Curriculum

Holt McDougal Biology is designed to accomodate a wide range of student abilities. Shop now for a biology homeschool package at Houghton Mifflin Harcourt. Holt McDougal Biology © 2012 is a comprehensive high school biology textbook and digital progr...

Biology

Practice biology skills on IXL, have fun, and win awards!...

ZornScience

Free high school chemistry, AP Chemistry, physics and biology from a classroom teacher: unit notes with NGSS alignment, video lessons with worked examples, virtual labs and ACT science practice. No login, CC BY-NC-SA.

Taz Science Labs

Interactive 3D STEM simulations for ages 8 to 14 with an AI companion. Predict, test and compare in physics, chemistry, biology, earth science and math. Free plan available.

Lesson Worlds

A browser learning world for grades 1 to 8 with guest play, plus 30 free physics, chemistry and biology labs, classic reading worlds and educator-made geography games.

Anatomy Atlas 3D

Free interactive 3D human anatomy explorer in the browser. Toggle body systems, rotate and fade layers, search structures by name, and test yourself with a quiz. No account or ads.

Mystery Science

Open-and-go elementary science lessons built around real questions kids ask, with narrated videos and simple hands-on activities that need almost no parent prep.

Pack Ciencias Interactivas: Fotosíntesis y Abejas

A Spanish-language interactive science bundle with two browser-based lessons—photosynthesis and bees/pollination—for K-5 learners, built for quick homeschool or classroom use with no app installs.

PBS LearningMedia Science Collection

Thousands of free, NGSS-aligned science videos, simulations, and lesson plans for K-12 from PBS, NOVA, NASA, and GBH.

CK-12 Biology FlexBook

Free, customizable high school biology textbook covering cells, genetics, evolution, ecology, and human biology with interactive quizzes.

The Biology Project: Human Biology

This resource has basic information and problem sets on human biology topics including DNA forensics, karyotyping, genetics, blood types, reproduction, and sexually transmitted diseases....

Biology Grade 7

Science Cells Unit Preview, Basic Cell Characteristics, Nucleus, Mitochondria, Chloroplasts, Mitosis and Organism Development, Summary Genetics Unit Preview, Genes and DNA, Sexual and Asexual Organisms, Sexual Reproduction, Summary Evolution Un...

Health and Life Science Collection

This collection presents in-depth information about key topics covered in the life science curriculum, including the human body, health, and food sources. Bioengineering Biology: Understanding Living Matter Biopharmaceuticals Birds Cloning Evol...