Stress Experiment: Timed Math and Recovery
Students take on a short timed mental math task that mimics test pressure, measure their pulse and compare how they recover with or without slow breathing. They see from their own data that they can regulate the stress response.
How to play
- Take a 15-second resting pulse and record it on the worksheet (1 min).
- Pressure task: count backward from 500 by 7s under your breath for 90 seconds, with the stopwatch in view and a warning that it will be checked (2 min).
- Take the pulse right away and rate tension from 1 to 10 (1 min).
- Half the class does slow breathing with long exhales and the other half just sits with no technique; take the pulse again at the end (3 min).
- Work out each group's average on the board and discuss the result and its limits (3 min).
Rules
- The math task isn't graded or checked in front of the class.
- Data stays anonymous when it's shared.
- Anyone who feels overwhelmed can go straight to the breathing.
Variations
Easier
The pressure task lasts 45 seconds and everyone does the breathing afterward.
Standard
A 90-second pressure task and a comparison between a technique group and a no-technique group.
Harder
Repeat the next week with the groups swapped to control for order effects.
Adaptations
- Dyscalculia or math anxiety: swap the task for naming words that start with a given letter against the clock.
- Hearing impairment: show the instructions and stopwatch on the smart board.
- Visual impairment: a partner calls out the time and records their pulse.
Learning goals
- Recognize the body's physical stress response.
- Test the effectiveness of a breathing technique with data.
- Interpret the results of a simple experiment critically.
Equipment for a class of 25
- worksheets: 30
- stopwatch: 1
Teacher tip
Make it clear at the end that the pressure was artificial and no one will see their math. With 30 students the difference between groups is often visible, though not always.
PatioLab has "Stress Experiment: Timed Math and Recovery" and 5176 more activities ready to drag into your lesson and run from your phone in the gym.
More activities like this
More cool-downs for High School
24-Hour Recovery Plan After Training
Seated and stretching gently, students rate how hard the session was and design a concrete recovery plan for the next 24 hours: hydration, food, sleep, light movement,…
4-7-8 Breathing and a Sleep Hygiene Plan
A cool-down lying on mats using the 4-7-8 breathing technique, which also helps with falling asleep.
5-4-3-2-1 Sensory Grounding While Stretching
A sensory grounding technique: students name five things they see, four they feel, three they hear, two they smell and one they taste while doing gentle stretches.