Ground-Level Prusik: The Knot That Grips

Students learn the Prusik knot with accessory cord on a rope stretched horizontally at waist height between two solid points. They see on the ground how the knot slides when unloaded and grips when pulled, and understand its use as a friction hitch in the mountains.

How to play

1. Setup: six ropes stretched at waist height between wall bars, posts or anchored goals, with five students per rope (3 min).
2. Demonstrate the three-wrap Prusik and how to dress it, with a closed loop of cord and a carabiner in the loop (4 min).
3. Individual practice: tie the knot, slide it unloaded and pull the carabiner to check that it grips; five reps (6 min).
4. Pair comparison: two-wrap versus three-wrap Prusik, and dry cord versus cord dampened with a sponge; note which grips better (6 min).
5. Final challenge: tie the knot with eyes closed in under 30 seconds and have a partner check it (4 min).
6. Wrap-up: in what mountain situations a friction hitch is used and why it never replaces a belay (2 min).

Rules

• No one hangs from the rope or the Prusik: always work standing and pulling with the hands.
• The rope is anchored only to fixed points checked by the teacher.
• A partner checks every knot before it is loaded.
• Carabiners are not banged around or dropped on the floor.

Variations

Adaptations

• Visual impairment: learns the knot by touch, following the path with the teacher's hands.
• Fine motor difficulties: uses thicker cord and a different color for each wrap.
• Autism: has a step-by-step photo sequence of the knot.

Learning goals

• Tie the Prusik knot correctly and test how it works.
• Analyze which variables affect a knot's ability to grip.
• Understand how friction hitches are used in the mountains and their safety limits.

Equipment for a class of 25

• ropes: 6
• accessory cords: 30
• carabiners: 30

Teacher tip

The cord must be thinner than the rope (for example, 6 mm on a 10 mm rope) for it to grip. Make it clear this is technical training, not ascending practice.

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