How to use this calculator
Enter total lesson minutes and the main activity blocks. The calculator checks whether your plan fits the available time and whether the practice ratio is balanced.
Plan a lesson by allocating minutes across introduction, explanation, practice, assessment, and review. Detect overrun, unused time, pacing risk, and activity balance.
Enter total lesson minutes and the main activity blocks. The calculator checks whether your plan fits the available time and whether the practice ratio is balanced.
The result shows if the lesson is overplanned, underplanned, or balanced. Practice-heavy lessons often support retention, but review and explanation time should not disappear.
This model uses three core activity blocks. Add warm-up or assessment time into the closest category if needed.
For a 60-minute lesson with 20 minutes of explanation, 25 minutes of practice, and 10 minutes of review, planned time is 55 minutes with 5 minutes remaining.
A balanced 60-minute lesson may include explanation, guided practice, independent practice, and review with a small transition buffer.
For skill-based subjects, practice often works best when it takes 35% to 55% of total lesson time.
A balanced plan includes instruction, practice, feedback, review, and a small buffer for pacing problems.
Five to ten minutes is often enough for a short lesson, while longer classes may need more structured review.
Keep a time buffer, reduce lecture blocks, and move optional activities to extension work if needed.
| Module | Purpose |
|---|---|
| Fit | Planned versus available time |
| Balance | Practice and review ratio |
| Risk | Overrun warning |
| Action | Pacing recommendation |