| 978-607-8202-82-9 | UNO 4th Grade Elementary Bimester 4 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-723-342-8 | UNO 4th Grade Elementary Bimester 2 Teacher's Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-341-1 | UNO 4th Grade Elementary Bimester 2 Teacher's Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-309-1 | UNO 4th Grade Elementary Bimester 2 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-308-4 | UNO 4th Grade Elementary Bimester 2 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-290-2 | BE Science 4th grade Elementary Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-284-1 | BE Science 4th grade Elementary | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-143-1 | UNO 4th Grade Elementary Bimester 1 Teacher's Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-142-4 | UNO 4th Grade Elementary Bimester 1 Teacher's Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-131-8 | UNO 4th Grade Elementary Bimester 1 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-130-1 | UNO 4th Grade Elementary Bimester 1 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-056-4 | UNO 4th Grade Elementary Bimester 5 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-055-7 | UNO 4th Grade Elementary Bimester 5 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-022-9 | UNO 4th Grade Elementary Bimester 5 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-723-021-2 | UNO 4th Grade Elementary Bimester 5 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2012 |
| 978-607-7973-12-6 | UNO 4th Grade Elementary Bimester 1 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-8202-81-2 | UNO 4th Grade Elementary Bimester 4 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-8202-65-2 | UNO 4th Grade Elementary Bimester 4 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-8202-64-5 | UNO 4th Grade Elementary Bimester 4 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-8202-01-0 | UNO 4th Grade Elementary Bimester 3 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-95696-6-2 | UNO 4th Grade Elementary Bimester 3 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-95696-1-7 | UNO 4th Grade Elementary Bimester 3 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-7988-63-2 | UNO 4th Grade Elementary Bimester 3 | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-7988-17-5 | UNO 4th Grade Elementary Bimester 2 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |
| 978-607-7988-16-8 | UNO 4th Grade Elementary Bimester 2 Teacher´s Guide | Sistemas Educativos de Enseñanza | Alexa Culpepper
| 2011 |