Courses are split into three parts. Part 1 is unlocked so you can begin your learning journey.

To view the lessons in Part 2 of the course, you must complete all the assignments in Part 1 up to the penultimate assignment (the last but one assignment in the part) This is to help ensure you progress through the course in the correct order and at an appropriate pace.

To view the lessons in Part 3 of the course, you must complete all the assignments in Part 1, and in Part 2 up to the penultimate assignment (the last but one assignment in the part) This is to help ensure you progress through the course in the correct order and at an appropriate pace.

When you are not able to see the lessons and assignments in Part 2 or Part 3 we say that these parts are 'locked' and will 'unlock' when you have completed the correct assignments.

If you have met all requirements and a Part remains locked, you can click Help on the left menu bar, then select Report a Problem.