The world's first math book without text/instructions, thus completely language independent.,No traditional answer key. Instead there is a script on the website that checks if your answer is correct.

Look inside the book:

http://www.smakprov.se/smakprov/visa/9789198233100/partner/smakprov

Look inside the book:

http://www.smakprov.se/smakprov/visa/9789198233100/partner/smakprov

Digital License for the pdf: unlimited use by students/teachers within School/organisation for 1year. When the order is complete the customi-marked Pdf book will be emailed to you. In a school with 300 students the cost per student is 0.57$ or 5SEK.