Keep moths constant
Changing backgrounds preserves all six original moth colors.
Camouflage Meadow
Search for existing moth color variants against green, brown and snowy backgrounds.
Grades 2–5 · Biology
Your goal
Use the green background and make 2 searches. Notice which existing moth colors remain hidden.
Reduced motion is on. The controls still update the scene.
0 of 6 moths detected. 2 matching moths remain undetected. A search checks nonmatching colors before matching colors in this model.
Moth colors are existing variants. The moths do not choose a new color when the background changes. Camouflage can reduce detection. This comparison uses a fixed contrast order, not a real predator experiment, population forecast or claim that matching organisms are invisible.
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Learn with Camouflage Meadow
Camouflage Meadow introduces elementary students to the relationship between color contrast and detection. The same six moths appear against green vegetation, brown leaves or snow. Choose a background and search one moth at a time, watching contrasting variants become marked before matching variants. Compare which colors remain undetected after equal numbers of searches. The activity emphasizes that the moths already have their colors and do not choose new adaptations when conditions change. Search order is a simplified contrast rule rather than a real predator experiment.
What to look for
Compare equal searches
Use the same number of searches on two backgrounds.
Notice hidden colors
Matching moths can be harder to detect but are not invisible.
For teachers and curious learners
Explain how background matching can reduce detection of existing variants. Ask students to predict what will happen, change one setting, and explain what they observe. Learn gives a starting point. Practice and Challenge offer new goals with the same scene.
Deterministic contrast ordering for six fixed moth variants. No real detection probability, predator behavior, reproduction or population change is simulated.