Clock Lessons app for iPhone and iPad

- 22 Lessons increase in difficulty - one lesson builds upon the next.

- Lesson content examples:
- Distinguish hour and minute hands.
- Identify the number the minute hand is pointing to.
- Drag the clock hands to the number indicated.
- Enter the time indicated on the clock.

- Progress at your own pace. Ready to start at a higher challenge level? Start any lesson at any time.

- Prompts are embedded within lessons and faded out across lessons.

- Includes a separate interactive clock for independent practice that can be customized. A few examples:
- Add or remove zones that help prompt time telling.
- Adjust how many minute numbers appear to increase or decrease difficulty.
- Change the look of the clock to practice generalizing across different clock faces.

- Robust data collection - Lessons automatically track mastery. Data review provides:
- Summaries of lessons completed, attempts on each lesson, and all trials attempted on each lesson.
- Includes brief summaries of common errors.
- Allows data summaries to be emailed.

- Recommended prerequisite skills:
- Learners should be fluent with numbers up to 60.
- Learners that cannot read can complete lessons with minimal supervision.