eMath Books Products and Prices


eMath Textbooks for 4f Studio

Buy eMath 1 - eMath 10 high school mathematics textbooks in the 4Ferries Webshop. The textbooks are downloaded to the textbook shelf in 4f Studio. Requires an active 4f Studio subscription.


eMath Textbook     $10  each

Supporting products

eMath Textbooks for Tablets

Buy eMath textbook apps for iPad tablets in AppStore.


Check prices in AppStore

Structured Derivations Textbooks

Buy textbooks on structured derivations on Amazon.


     Ralph-Johan Back: Structured Derivations: Teaching Mathematical Reasoning in High School  (Four Ferries Publishing, 2015)

     Ralph-Johan Back: Teaching Mathematics in the Digital Age with Structured Derivations (Four Ferries Publishing, 2016)


 Check prices on Amazon.