Please help me understand and break apart the Methods section of this research paper:

This is the article: Comparing Traditional and Tablet-Based Intervention for Children With Speech Sound Disorders: A Randomized Controlled Trial (asha.org)

https://pubs.asha.org/doi/epdf/10.1044/2019_JSLHR-S-18-0301

1. Describe the type of data collected (categorical/ordinal/interval/ratio; continuous/discrete; active/attribute, etc.).
2. Describe the experimental population - number of subjects per group and defining characteristics. Also write if you feel that this population was well chosen, and if are there any issues with subject selection that might affect the study's validity.
3. Describe the experimental design and procedure.
4. List key constructs and the operational definitions used to study them, at minimum for the dependent variable(s) but also for any other important concepts.
5. List the independent variables studied, and their levels (if applicable).
6. List the specific dependent variables measured.
7. Describe the data analysis approach.