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Tangerine y EGRA

Tangerine® is electronic data collection software designed for use on mobile computers, including netbooks, tablet computers and smartphones. It's primary use is to enable recording of students’ responses in oral early grade reading and mathematics skills assessments, specifically Early Grade Reading Assessment (EGRA) and Early Grade Mathematics Assessment (EGMA), and interview responses from students, teachers and principals on home and school context information.

Tangerine was developed by RTI International with its own internal research funds, and made available to the public through a GNU General Public License. This means that Tangerine's source code is available for anyone who wishes to install and use Tangerine on their own web server. Tangerine's code and related documentation is available on Github, a commonly used repository for open source software. See below for a further description of Tangerine's open source nature.

Organizations or governments may use Tangrine in EGRA implementations to simplify preparation and implementation of field work, to reduce measurment and data entry errors and to elimiate manual data entry.

Early Grade Reading Assessment (EGRA) es una evaluación de los alumnos oral diseñado para medir las habilidades fundamentales, más básicas para la adquisición de la alfabetización en los primeros grados: reconocer las letras del alfabeto, leer palabras simples, la comprensión de oraciones y párrafos, y escuchar con comprensión.

Guía de implementación


  • XO 4 Touch. XO-4
  • Imagen Android Jelly Bean instalada en la XO. Android
  • Aplicación Tangerine instalada en el sistema Android [APK] [Short URL]
  • Internet para sincronizar los datos recogidos en las pruebas.
  • Cuenta en Tangerine Central para almacenar la información de las pruebas.
  • Escuelas donde aplicar las pruebas.

Manual de uso

Disassembly top

You should go through the Disassembly top instructions if you need to access:

  • The screen
  • The game buttons
  • The power button
  • The microphone, camera, or speakers
  • The motherboard
  • The wireless card

Related disassembly instructions exist for:

OLPC Australia Help Videos

Disassemble XO-1.5 instructions:
XO 1.5 Disassembly Top (33-page PDF, 4.7MB)

Disassembly bottom

You should go through the Disassembly bottom instructions if you need to access:

  • The spare screws in the handle
  • The keyboard
  • The touchpad
  • The mouse buttons
  • The battery
  • The "latches" that hold in the "rabbit ear" wifi antennae
  • The rubber feet

OLPC Australia Help Videos

Disassemble XO-1.5 instructions:
XO 1.5 Disassembly Bottom (20-page PDF, 1.7MB)

Recursos online