3rd Grade Science Textbook cover
Free textbook

3rd Grade
Science

The official MegaCub textbook for 3rd grade science — clear explanations, practice-ready lessons, and offline reading in EPUB format.

Read onlineDownload EPUB1010 KBAll textbooks
  • Standards-aligned Science
  • Works on phones, tablets & e-readers
  • Free forever — no account required

What's inside

A look at topics covered in this 3rd grade science book.

  1. Scientific Inquiry and Practices
  2. Properties and States of Matter
  3. Forces, Motion, and Mechanical Interactions
  4. Energy Forms, Transfer, and Conservation
  5. Earth's Systems and Surface Processes
  6. Meteorology, Climate, and the Hydrosphere
  7. Astronomy and Planetary Science
  8. Fundamentals of Biology

Prefer interactive lessons?

MegaCub turns the same curriculum into adaptive practice — so reading becomes progress.

Browse more free textbooks

Math, Science, and English — grades 1 through 12.

Back to catalog