The Cipher Leaves
A strange message hidden in a set of leaves leads four friends to the first hidden biome and to the first sign of what happened to Dr. Alvarez.
Buy on AmazonBlue Seagull Publishing makes leveled workbooks, chapter books, and middle-grade adventure novels. Every book is built to be used at home or at school.
Each lesson teaches the skill, then gives practice at three levels so every child can start where they are and keep climbing. The parent answer key is bound into the back of every book.
Kindergarten through grade 12, across language arts, math, science, and social studies.
Every lesson builds from guided practice to independent work.
Answers for every lesson in the back, ready for a parent or teacher to check work.
Full-size 8.5×11 pages, ready to print at home or school. Your file arrives by email right after checkout.
Every workbook comes with a Family License (copies for the children in your household). Teachers can choose a Classroom License for one teacher's students at checkout. Secure checkout through Payhip; your PDF is emailed to you instantly. Visit the full store.
Years ago, Dr. Elena Alvarez created secret sanctuaries for the planet's most fragile ecosystems, and then she disappeared. Maya, Eli, Aria, and Ethan follow the clues she left behind, one hidden biome at a time. A six-book adventure series for readers ages 10–12.
A strange message hidden in a set of leaves leads four friends to the first hidden biome and to the first sign of what happened to Dr. Alvarez.
Buy on AmazonThe trail leads to Morocco and deep into the Sahara, where the friends must stay one step ahead of the Consortium.
In the Arctic islands of Svalbard, Norway, a frozen sanctuary holds new clues that Dr. Alvarez may still be out there.
Six books planned. Join the email list below to hear when each new book comes out.
A chapter book series written at a third- and fourth-grade reading level. Real science, short chapters, and characters young readers want to follow from book to book.
Good fit for readers moving up to chapter books, kids who love asking how and why, and classroom libraries in grades 3–4.
Designed for busy classrooms, so everything drops easily into your week.
Digital novel-study units for each book in the series, ready to import into Canvas, with a slides and PDF version for any classroom. The first unit, for The Cipher Leaves, is built for grade 6.
Use the workbooks for small groups, intervention, homework, or summer practice. The three practice levels make it easy to meet several reading and skill levels with one book.
Blue Seagull Publishing is an independent publisher of educational textbooks and workbooks, children's chapter books, and middle-grade novels. Our goal is simple: give families and teachers books that are clear, engaging, and truly useful.
Our catalog includes the Blue Seagull Skill Builders K–12 workbook series, the Hidden Biomes middle-grade adventure series, Science Squad chapter books, and classroom resources to go with them.
Get an email when a new workbook or Hidden Biomes book comes out. A few emails a year, no more.
Send a note and we'll get back to you within a few school days.