Free K-8 Science Worksheets
Find free printable K-8 science worksheets for life science, earth science, physical science, and STEM. All worksheets are NGSS-aligned and include answer keys.
Science PDF - K-8 Science Worksheets — Subcategories
Life Science
Biology, plants, animals, and human body worksheets
View →Earth Science
Weather, geology, and space science worksheets
View →Physical Science
Matter, forces, motion, and energy worksheets
View →Chemistry
Chemistry basics and periodic table worksheets
View →STEM
STEM challenges, science fair, and weekly experiments
View →Tools & Resources
Scientific method, lab notebooks, data graphing, and more
View →Frequently Asked Questions
What does this Free K-8 Science Worksheets cover?
These worksheets cover concepts aligned with NGSS standards for K-8 students. Formats include diagrams, vocabulary, short answer, and multiple choice.
Are these worksheets NGSS aligned?
Yes — all worksheets are designed to align with Next Generation Science Standards (NGSS), ensuring they match current curriculum expectations.
Can I use these for science fair preparation?
Yes — science fair templates, lab report guides, and hypothesis worksheets are available and ideal for science fair projects at all grade levels.
Are these worksheets free?
Yes — all worksheets are completely free with no signup required. Click Print for a clean printout optimized for US Letter paper.
Is there an answer key?
Yes — every worksheet includes a complete answer key for quick grading and self-checking.