Free Printable 4th Grade Biology Activities

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Butterflies Crossword Puzzle

Butterfly crossword puzzle for Grades 4–6. Covers butterfly anatomy, the life cycle, native plants, and species like Monarchs and Swallowtails.

La Célula Word Search

Spanish cell biology word search for Grades 3–5. Find 8 hidden words including ADN, núcleo, and mitocondria in a circle-shaped grid.

Submarines and Deep Seas Word Search

Submarines and deep-sea word search for Grades 4–6. Find 15 hidden words including bioluminescence, anglerfish, and hydrothermal vent features in this ocean-science puzzle.

Decomposers and Garbage: Reading Comprehension

Printable science worksheet with reading passage and comprehension questions about decomposers, garbage, and odor. Includes true/false and multiple-choice items.

Bacteria and Decomposers

Printable science worksheet on bacteria: students read about decomposers, record facts about size and habitat, and learn how bacteria break down waste.

Cells Word Search

Cell biology word search for Grades 3–5. Find 6 hidden words: cell, cytoplasm, nucleus, mitochondria, organism, and lysosome.

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Seedless Fruits and Plant Mutations

Printable science worksheet on plant mutations and seedless fruits, with fill-in-the-blank questions and vocabulary about mutations and sterile plants.

Heredity and Traits Unit Review

Printable science unit review with five multiple-choice questions on heredity, traits, and how offspring inherit characteristics from parents.

How Kittens Inherit Traits From Parents

Elementary science worksheet about heredity and inherited traits using kittens as an example. Students identify which parent traits the kitten inherited.

Species and Varieties

Printable elementary science worksheet on species and varieties with multiple-choice and fill-in-the-blank vocabulary practice using apple and orange trees.

Week 6 Review: Science and Math

Printable Week 6 review worksheet for Grades 3–4 covering living things, environments, rounding, time, and word problems.

Science Vocabulary 1 Word Search

Science vocabulary word search for Grades 3–5. Find 40 hidden words on plant biology and sound, including anther, pollination, decibel, and amplifier, in a circle-shaped grid.

Fungi and Mushrooms: True or False

Printable science worksheet for Grades 3–6 with 20 true-or-false questions on fungi, mushrooms, decomposition, antibiotics, and hallucinogenic effects.

Animal and Plant Structures Exit Ticket

Printable exit ticket for Grades 3–5 on animal and plant structures. Students match definitions and identify internal and external structures.

Biology World Word Search

Biology word search for Grades 4–6 with 10 hidden words on cells, ecosystems, and scientific concepts including organism, metabolism, and contamination.