# Tug-of-War

### Source Institutions

Twin Cities Public Television

This activity (on page 2 of the PDF under SciGirls Activity: Tug O' War) is a full inquiry investigation into tug-of-war physics. Groups of learners will test two tug-of-war strategies. Which is better: a team of a few big kids or lots of smaller kids? Learners form teams based on weight. Each team is timed as it pulls a sled of sand bags equal to their weight for 30 feet. Learners determine an average pull time for each time (after resting) and compare the results. Relates to linked video, DragonflyTV: Tug O’ War.

### Quick Guide

Preparation Time:
5 to 10 minutes

Learning Time:
2 to 4 hours

Estimated Materials Cost:
\$10 - \$20 per group of students

Age Range:
Ages 8 - 14

Resource Types:
Activity, Experiment/Lab Activity, Lesson/Lesson Plan

Language:
English

### Materials List (per group of students)

• sand bags, 50 lb. each
• a plastic snow sled, with large diameter rope attached
• a flat grassy surface outdoors
• a 50’ tape measure
• cones or markers
• a stopwatch
• a bathroom scale

### Subjects

• Engineering and Technology
• Engineering
• Civil Engineering
• Life Sciences
• Human Body
• Muscles and Skin
• Health and Nutrition
• Mathematics
• Data Analysis and Probability
• Data Analysis
• Data Collection
• Data Representation
• Probability
• Measurement
• Size and Scale
• Rate
• Number and Operations
• Decimals
• Problem Solving
• Reasoning and Proof
• Physical Sciences
• Energy
• Energy and Power
• Motion and Forces
• Momentum and Velocity
• Acceleration
• Structure and Properties of Matter
• Mass and Weight
• The Nature of Science
• The Scientific Process
• Conducting Investigations
• Gathering Data
• Formulating Explanations
• Communicating Results
• The Nature of Technology
• The Design Process
• Problem Solving

### Informal Categories

• Games
• Outdoor Activity
• Physical Activity
• Sports and Exercise

### Audience

• see
• be mobile
• touch

#### Learning styles supported:

• Involves teamwork and communication skills
• Uses STEM to solve real-world problems
• Involves hands-on or lab activities

• #### Girls

• Highlights STEM opportunities for this group
• Identifies role models or mentors in STEM fields from this group
• Uses inclusive images of people from this group

• Free access

• DragonflyTV