STEM Educator Hub

Curriculum-ready materials designed by marine biologist Yechiel Kuperman to bridge the gap between humorous classroom reading and rigorous biological science.

Teacher Quick Facts

Parameter	Quick Facts
Grade level	2–5
Ages	7–10
Subject	Life science / ecosystems / reading comprehension
Time	30–45 minutes per lesson
Includes	Teacher notes, vocabulary, discussion questions, printable worksheet, answer key
Standards	NGSS-aligned, exact codes listed inside PDF
Privacy	No student login, no tracking, no child account required

Chapter-by-Chapter Lesson Plans

Our teacher notes are not just basic summaries. They are complete science guides that map the story’s situations directly to biological truths. Every guide includes discussion starters, key vocabulary, laboratory-style explanations, and hands-on classroom activities.

Designed for NGSS (Next Generation Science Standards) elementary curriculums.

Illustrated blue fish wearing a lab coat looking through a microscope, with a tiny orange crab watching from beside the microscope stand — teacher-stem icon

Book-by-Book Teacher Lesson Notes

Front cover of the George the Cranky Guppy illustrated STEM book — Yechiel's Fishery Farm series for children ages 7-10

Book 1 Curriculum

George the Cranky Guppy

STEM Science Companion · Ages 7–10

Focus: Water Chemistry & Osmotic Pressure

Pulls the real science out of Book 1, focusing on how a freshwater fish's body reacts to brackish conditions and the biology of osmotic acclimation.

Key Concepts Explored:

•Salinity & osmotic pressure
•Gill function & aquatic respiration
•Stress response & fish physiology
•Acclimation & transition protocols

Download STEM Guide (PDF)

Front cover of the George and the Mosquito Patrol illustrated STEM book — Yechiel's Fishery Farm series for children ages 7-10

Book 2 Curriculum

George and the Mosquito Patrol

STEM Science Companion · Ages 7–10

Focus: Ecology, Food Webs & Adaptations

Maps the biology of mosquito control, exploring insect life cycles, food chains, prey-predator relationships, and specialized hunting adaptations.

Key Concepts Explored:

•Food webs & trophic levels
•Mosquito life cycles (larvae to adult)
•Biological vector management
•Physics of Archerfish hunting jets

Download STEM Guide (PDF)

Front cover of the George Meets the Salt Line illustrated STEM book — Yechiel's Fishery Farm series for children ages 7-10

Book 3 Curriculum

George Meets the Salt Line

STEM Science Companion · Ages 7–10

Focus: Osmoregulation & Ecosystem Cycles

Goes deep into advanced concepts like internal cellular salt-balance, the beneficial bacteria nitrogen cycle, fluid densities, and scientific recording.

Key Concepts Explored:

•Osmoregulation (salt/water balance)
•The Nitrogen Cycle (nitrate & filters)
•Water density & halocline layering
•Scientific logging & recording mistakes

Download STEM Guide (PDF)

Illustrated orange guppy fish holding up an A-plus graded test paper with a proud expression — reading comprehension quiz icon

Comprehension & Vocabulary Quizzes

Dyslexia-friendly reading comprehension sheets built around the stories of George and his friends. Designed to test tracking, word meanings, and retention.