Science Worksheet · Grades 3–6
Coral Reefs Worksheet
A printable science worksheet for grades 3-6 on coral reefs. Students learn how tiny polyps build a reef and the partnership between coral and algae, match eight clues, then answer four questions. A complete answer key is included.

Subject
Science
Grades
Grades 3–6
Skill Focus
Coral Reefs, life science
Lesson Length
30 minutes
Lesson Overview
About this worksheet
A coral reef is an underwater structure built by tiny animals called polyps and home to a huge variety of ocean life. This worksheet teaches the key terms – polyps, symbiosis, algae, and coral bleaching.
The reference box and Section A are on page 1. The reference box defines the key terms. Section A has eight clues to match to the correct term. Section B on page 2 has four short-response questions.
Page 3 is a complete answer key with answers for every item. The worksheet pairs well with the Ecosystems and Ocean Zones worksheets.
How to Use This Lesson
Read the reference box and review the reef terms.
Match each clue to its term in Section A on page 1.
Answer the four short-response questions in Section B on page 2.
Use the answer key on page 3 for self-check.
Pair with the Ecosystems Worksheet for more on habitats.
Printable Resource
A classroom-ready PDF with everything in one printable resource.
Full Member Resource · Printable PDF · 3 pages · Answer Key
Coral Reefs Worksheet
A printable science worksheet for grades 3-6 on coral reefs. Students learn how tiny polyps build a reef and the partnership between coral and algae, match eight clues, then answer four questions. A complete answer key is included.
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