Computers and Technology

Classroom technology

The use of technology in the classroom supports and integrates the subject matter curriculum. All Castro classrooms are wired for Internet access. Each classroom can be scheduled for computer lab time for projects as needed.

The most widely used technology programs at Castro are ST Math for mathematics practice, Edutyping and Lexia for reading practice.


Using Lexia, students work independently at their own pace through individualized learning paths to develop fundamental reading skills in a structured, sequential manner. Teachers are notified when students require support or intervention and are provided with the resources for face-to-face instruction.

ST Math

Students at Castro use the ST Math software program provided through the district to practice math concepts. In ST Math, students play visual math games designed to teach math concepts. Selected games are also available for the students to practice at home or on any computer with Internet access and on some tablets. Search for "JiJi" in the App store of your choice to download the App for your device.

The ST Math K-5 instructional software is a research-proven, comprehensive, grade-level math program that utilizes Spatial-Temporal (ST) reasoning to teach math concepts that are aligned to state standards.The program includes hundreds of language-independent computer games that promote mastery-based learning and mathematical understanding.

To access ST Math at home:

  1. Go to
  2. Click on JiJi, the penguin.
  3. If this is the first time logging in at home, you will be asked to enter the activation code. Please ask your child’s teacher for this code.
  4. Click “I agree.”
  5. Click “Allow local data storage.”
  6. Your student will then see the familiar screen with JiJi. He or she needs to click JiJi and enter the password exactly as in school.
  7. After playing, the student should always use the back-arrow button on the bottom-left of the screen (just like at school) to exit the program and ensure that progress is saved.

If you encounter technical difficulties, please contact your school or teacher for assistance.

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