| 100+ Easy and Fun Creative Nature Walks | Our Journey Westwardhttps://ourjourneywestward.com/ | Science | Grades Pre-K–12 | Charlotte Mason |
| A Beka Science: grades 1-6 | Abeka | Science | Grades 1–6 | Traditional |
| Amplify Science | Amplify | Science | Grades K–8 | Inquiry Based |
| A Pocketful of Wonder: 50 Hands-On Adventures for Kids to Discover God’s Creation | Bethany Househttps://bakerpublishinggroup.com/bethanyhouse | Science | Grades Pre-K–2 | Charlotte Mason |
| Apologia's Exploring Creation Series (elementary grades) | Apologia Educational Ministries | Science | Grades K–6 | Charlotte Mason |
| A Reason for Science | The Concerned Group | Science | Grades 1–8 | Inquiry Based |
| A Year of Discovery | Science Through Naturehttps://sciencethroughnature.com/explorer/ | Science | Grades 1–4 | Classical |
| Be a Naturalist | Science Through Naturehttps://sciencethroughnature.com/explorer/ | Science | Grades 2–5 | Classical |
| Behold and See K: Exploring Nature with Stories, Activities, and Nature Walks | — | Science | Grades K–2 | Blended |
| Behold and See Science Series | Catholic Heritage Curricula | Science | Grades 1–7 | Traditional |
| Be Naturally Curious Science Mini-Courses | — | Science | Grades K–5 | Inquiry Based |
| Berean Builders | — | Science | Grade 1 | Traditional |
| Big Book of Earth and Sky | Master Bookshttps://www.masterbooks.com/ | Science | Grades 2–12 | Literature Based |
| Binder-Builders for the Science in History Series | A Journey Through Learninghttps://ajourneythroughlearning.net/ | Science | Grades 1–6 | Traditional |
| BioBox Labs | BioBox Labshttps://bioboxlabs.com/ | Science | Grades 1–9 | Classical |
| Bitsbox | — | Science | Grade 1 | Eclectic |
| BJU Press Science series | BJU Press | Science | Grades 1–6 | Traditional |
| Blood and Guts: A Working Guide to Your Own Insides | Little, Brown and Companyhttps://www.lbyr.com/ | Science | Grades 2–6 | Unschooling |
| Boon Dah | — | Science | Grade 1 | Traditional |
| Brainy Kit | — | Science | Grade K | Montessori |
| Bricks, Bots, & Beakers | — | Science | Grades Pre-K–12 | Traditional |
| Brilliant!: 25 Catholic Scientists, Mathematicians, and Supersmart People | Pauline Books and Mediahttps://paulinestore.com/ | Science | Grades 2–8 | Classical |
| Building Foundations of Scientific Understanding | Outskirts Press | Science | Grades K–8 | Inquiry Based |
| California Elevate Science | Savvas Learning Company (f/k/a Pearson) | Science | Grades K–5 | Inquiry Based |
| Carolina Biological Supply Company | Carolina Biological Supply Company | Science | Grades K–12 | Inquiry Based |