Conclusion

- Research and Discovery: 
In this first stage, students dive into the scientific foundations of thalassaemia. They discover that it is a genetic blood disorder caused by mutations in the HBB gene, which disrupts the production of hemoglobin. Without enough hemoglobin, red blood cells cannot carry oxygen effectively, leading to chronic anemia and other health complications (Thalassaemia International Federation, 2021).
Learners are also introduced to current treatments such as regular blood transfusions and bone marrow transplants. These solutions prolong life but do not cure the disease. This sets the stage for the promise of gene therapy, which targets the faulty DNA itself to restore normal hemoglobin production (Cavazza et al., 2016).

- Content Development:
The content is carefully structured so that students first understand the problem (a mutation that causes a defect in haemoglobin) before being introduced to the solution (gene therapy). Teachers use clear diagrams, videos and analogies, for example comparing the defective gene to a recipe with missing instructions and gene therapy to modifying the recipe so that it works again. 

- Needs Analysis: 
High school students often struggle to visualise microscopic and abstract processes such as DNA mutations or gene editing. They need visual aids, detailed explanations and interactive activities to understand their complexity. Students also need to understand why gene therapy is important: connecting science to real patient stories creates empathy and motivation to learn.

- Curriculum Implementation: At this stage, theory becomes practice. Students enter a virtual AR laboratory, where they can see and manipulate DNA as if they were inside a cell. The curriculum guides them through the process of locating the faulty HBB gene and repairing it with CRISPR-Cas9.

- Interactive Exercises: AR Mission: Students identify the faulty HBB gene in a virtual patient’s DNA, cut it with CRISPR, and insert a corrected sequence. They then observe red blood cells beginning to function properly.  Case Study Activity: Learners review real-world gene therapy trials for thalassaemia, comparing traditional treatment outcomes with new genetic approaches.

- Feedback Collection: Immediate AR feedback: The application shows whether the gene was corrected and if the patient’s cells now produce hemoglobin. Teacher observation, Student reflection.

- AR Integration: AR is expanded to test advanced scenarios. Students can explore what happens if gene therapy only corrects part of the patient’s cells, or how the same technique might be applied to other genetic blood disorders like sickle cell anemia. AR provides a safe environment to experiment with possibilities that cannot be replicated in a real classroom.

- Interactive Learning: students are encouraged to think critically: How might gene therapy reduce the need for transfusions?

Gamified Content:

Points and Badges: Earned for each successful AR gene correction mission.

Leaderboards: Teams compete on accuracy and creativity.

Quests and Levels: New challenges are unlocked, such as correcting multiple faulty genes or designing therapies for other disorders.

Rewards for Exploration: Bonus recognition for students who bring in examples of recent genetic breakthroughs from news or research.

Collaborative Gamified Tasks: Groups must work together to cure a virtual patient, dividing tasks like designing, editing, and presenting results.

AR-Based Assessments: 

Students demonstrate mastery by completing gene editing missions.

They explain their strategies in presentations or lab journals.

Teachers assess accuracy, teamwork, creativity, and the ability to connect science to ethics.