Endocrine System
Science Mystery Worksheets · Grades 5–8 · Human Body Systems
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Inside the case file
Investigate the body's chemical messengers. This printable Endocrine System Science Mystery turns a nonfiction science passage about hormones and glands into a science-detective investigation for Grades 5–8 science teachers, homeschoolers, and tutors. It drops straight into a human body systems or life science unit and gives students a real reason to read closely.
With every correct answer another suspect is cleared, so close reading — not guessing — is what solves the case. Print and go.
Quick Details
Grade Levels: Grades 5–8
Format: Printable PDF
Resource Type: Science Mystery worksheets
Reading Skills: Nonfiction science comprehension, text evidence, main idea, cause and effect, and science vocabulary
Science Standards: Supports NGSS MS-LS1-3
Tech Needed: None — no apps, locks, passwords, or student logins required
The Case
The body's signals have been scrambled, and a line-up of suspects is waiting. The only way to crack the case is to read closely about the endocrine system — the glands, the hormones they release, and how they keep the body in balance — using every comprehension answer as a clue to rule a suspect out, until just one remains.
How the Science Mystery Works
Science Detectives read about the endocrine system, gather evidence from the passage, and eliminate a suspect with each answer until only the culprit stands.
What's Included
- A "You are a detective" case-file page that sets the scene and the mission
- An engaging 2-page informational text on the endocrine system (glands, hormones, and how the body stays in balance)
- Multiple-choice comprehension questions (all answers found in the text)
- Open-ended written response questions
- A suspect line-up page for eliminating suspects one clue at a time
- A science vocabulary word search and extension activities for early finishers
- A full answer key
- Color and black-and-white versions
- Print-and-go PDF format
Skills Covered
- Reading and understanding nonfiction science text
- Finding and using text evidence
- How glands and hormones help body systems interact and stay in balance
- Cause and effect and drawing conclusions from evidence
- Science vocabulary in context
- Logic, reasoning, and critical thinking
Best Used For
- Human body systems and life science units
- NGSS-aligned review and inquiry lessons
- Science and nonfiction reading comprehension
- Science centers, test prep, sub plans, and small groups
- Homeschool science
