Welcome students and set the stage. Mention that today we’ll learn a simple formula to quantify our daily exercise and understand how time and effort combine to boost fitness.

Define both terms clearly. Use gestures or examples (e.g., walking vs. sprinting) to illustrate intensity levels.

Introduce the formula. Write it on the board and point to each part: duration and intensity. Emphasize multiplication.

Walk through this example step-by-step. Ask: Why assign intensity a number? How does more time or higher intensity change the result?

Distribute or project the worksheet. Read the instructions aloud. Remind students to record three activities and show where to write each value.

Prompt a few volunteers to share. Encourage discussion about intensity’s impact and ways to increase scores safely.