The student effectively describes and explains the research design, correctly identifying it as independent measures and providing an explanation of its application. However, it is suggested that they should have also elaborated on the randomization of participant allocation. The sampling technique, identified as self-selected sampling, is adequately described, with an explanation that participants signed up via an online form. The relevant characteristics of the research participants, such as age and gender distribution, are appropriately explained. The student justifies their choice of second-year IB Diploma students as participants, citing their mathematical skills and English proficiency. Additionally, they successfully state and explain the controlled variables, alongside providing reasons for their control. The explanation of the choice of materials used is also effectively presented.
