Draw a Picture

Turn words into diagrams

An interactive lesson with 7 steps, about 6 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Average speed is total distance ÷ total time, not the average of the speeds.
• Look for the simple quantity (here, time) instead of summing complicated pieces.
• A good picture, like two monks on one day, can make a hard problem obvious.

Steps

1. Average speed
2. The fly and the trains
3. The zigzag, drawn
4. A rope around the world
5. Overlapping hands
6. Same place, same time
7. The monk on the mountain