Grade 12 Mathematics Investigation 2025?

What Is the Grade 12 Mathematics Investigation 2025?

South African Grade 12 includes a portfolio task known as the Mathematics Investigation, usually administered in February of the exam year.

• A marking guideline for the Grade 12 Mathematics Investigation – February 2025 is available, covering topics such as compound angles, double angles, trigonometric identities, and graph sketching. It provides detailed marking criteria and expected responses. 
• Another related document titled “Grade 12 Term 1 Investigation 2025: Compound & Double Angles” also appears to outline the same or a similar February 2025 task. It’s a 50-mark assessment, scheduled on 25 February 2025, focused on compound and double angle calculations, including conjecture, calculations, and marking guidelines. 

Key Highlights from the Documents

Format & Topics:

• The investigation focuses on trigonometric identities—specifically compound-angle formulas like \cos(A – B), \cos A \cos B + \sin A \sin B, and verifying these using specific angle values like 60°, 30°, etc. 
• The task is structured for approximately 50 marks and is meant to be completed in about one hour, typically split across parts or sections. 

Marking Guidelines:

• The February 2025 Investigation Memo includes tick-based rubric-style marking—guiding markers on how to allocate marks based on correctness of calculations, reasoning, and presentation quality. 
• It emphasizes graph accuracy, calculation accuracy, and understanding of the identities, along with how students should present their working to receive full marks. 

What You Can Do Next

1. Download the Full Investigation Paper and Memo
   Use platforms like Studocu or Scribd to access the full PDF versions of the task and marking guidelines.
2. Review the Content and Format
   Focus on:
   • Trigonometric identities: compound and double angles.
   • How calculations are done and reasoned.
   • Presentation expectations—tables, graphs, showing steps.
4. Practice Similar Tasks
   Use the February 2025 investigation as a template to practice for your own school assignments or prep exams.

Summary Table