Quatr.us experts wrote all of these simple, free articles. Click on any link to read the full article.

Cells

Viruses

Mushrooms

Plants

Plant Reproduction

Biology Activities

Animals

Animal Systems

Bibliography and further reading:

Biology for Every Kid: 101 Easy Experiments That Really Work, by Janice VanCleave. Ages 9-12. Some work better than others to explain concepts, but they’re all good activities.

Real Science-4-Kids, Biology Level 1, by Rebecca Keller (2005). Ages 9-12. Also not high school level biology. Cute pictures and easy, enthusiastic explanations.

Biology: Life as we know it!, by Dan Green and Simon Basher (2008). Ages 9-12. A good intro, especially for homeschoolers – NOT high school level biology.

Physics
Chemistry
Math
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