Population Sampling Lab

This is an illustrative teaching model, not real field data. Estimate a hidden population, then compare your estimate with the true value.

In the meadow, sample 3, 10 and 20 quadrats. Compare I choose with Random. Habitat shading suggests where plants may grow, but does not show plant counts.

Use arrow keys and Enter on the meadow grid. On phones, each meadow row wraps into two groups of five quadrats. Sampled quadrats cannot be used again in the same run.

At the pond, net a first catch, mark and release it, let the fish mix, then net a second catch. Compare five small-catch trials with five large-catch trials.

Test each problem with the setting off and on. Predict first. Write explanations in your own document using the numbered worksheet prompts.

Copy your tables before leaving. Nothing is saved or sent. Reloading or changing language clears all work.