Pike fish pose a threat to native trout and catfish in lakes. Would you drain and poison a lake to get rid of the Pike fish? If the lake was drained and poisoned, then refilled and repopulated with trout and catfish, how would you determine that the trout and catfish are thriving and that there are no more Pike fish in the lake? This activity simulates the numbers of the different types of fish in the lake. There is data to collect and analyze. Then there are assessments and determinations to be made based on these findings. Sounds like a great hands-on activity to learn about proportions.