Artificial Life evo-edu.org

Weasel-style selection demonstration for variation, selection, and cumulative change.

Study Guide

Cumulative Selection Explorer teacher and learner guide

Use this guide to frame the tool with a clear question, expected observations, and model-limits discussion rather than treating it as a standalone demo.

Teaching Focus

Teacher notes

  • Make the limitations of the demonstration explicit.
  • Use the tool to frame questions about cumulative versus one-step change.
  • Connect it to model critique, not just model celebration.

Learner tasks

  • Run the simulation and track score improvement over generations.
  • Compare a higher and lower mutation rate.
  • Explain why the model is a demonstration, not a full account of biological evolution.

Core Question

What difference does cumulative selection make compared with undirected random change?

Scientific Virtues

Habits to practice

  • State clearly what the model demonstrates and what it does not claim about real biological systems.
  • Use repeated runs and comparisons as evidence instead of relying on a single striking outcome.
  • Treat model limitations as part of the explanation, not as an afterthought.

Continue the thread

Use the Scientific Virtues page to connect model use with evidence, skepticism, and revision.