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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Sams little sister Michelle thinks theres a ghost in the creepy old house their dad bought. With help from a couple of friends on the soccer team, Sam, Amy, and Michelle use an old ghost storyplus measuring tools and calculations for distance, volume, and perimetersto figure out the truth behind . . . The Secret Ghost.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
I got 'The Secret Ghost' for my best friend who loves puzzles and math. She enjoyed the unique blend of mystery and education. Plus, the manga style is appealing to both kids and adults. Will be gifting more copies!
S
Samuel O'Brien
Perfect gift for math lovers!
I got 'The Secret Ghost' for my best friend who loves puzzles and math. She enjoyed the unique blend of mystery and education. Plus, the manga style is appealing to both kids and adults. Will be gifting more copies!
S
Samuel O'Brien
Perfect gift for math lovers!
I got 'The Secret Ghost' for my best friend who loves puzzles and math. She enjoyed the unique blend of mystery and education. Plus, the manga style is appealing to both kids and adults. Will be gifting more copies!
C
Carlos Mendoza
Great for teaching math at home
This manga does a fantastic job of making distance and measurement fun! I bought it for my niece, and she can't put it down. The art is vibrant, and the mystery keeps her engaged. A solid addition to our home library!
C
Carlos Mendoza
Great for teaching math at home
This manga does a fantastic job of making distance and measurement fun! I bought it for my niece, and she can't put it down. The art is vibrant, and the mystery keeps her engaged. A solid addition to our home library!
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support@ergodebooks.com
⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.