Engaging secondary school students in sustainability assessments through farm nutrient mass balances.

Decision-support tools (DSTs) are increasingly used to collect, manage, and/or analyze growing amounts of data generated on farms. The whole-farm nutrient mass balance (NMB) is an assessment with an associated DST (the Cornell NMB calculator) that measures farm nutrient management efficiency. Our main objectives were to (1) develop and implement a secondary school curriculum on NMB assessments; (2) evaluate its impact on student knowledge and perceptions of agricultural sustainability, nutrient management, careers in agriculture, awareness about data collection and use of DSTs, and analytical and quantitative skills; and (3) assess teacher experiences delivering the materials. The curriculum was implemented across 21 New York classrooms. Students completed one pre- and one post-curriculum implementation questionnaire (n = 134). Teachers completed a post-curriculum implementation questionnaire (n = 19). Results showed that the curriculum enhanced student knowledge of nutrient management and effectively conveyed the fundamentals of the NMB metrics. It also impacted student perceptions of the utilization of DSTs and need for mathematical skills and data management knowledge in agriculture. The curriculum did not influence student interest in pursuing agricultural careers but exposed them to aspects of farming that they were not previously familiar with. The math-focused lessons were identified as challenging by many students and teachers. Teachers found the curriculum applicable to the real world, exposing students to new aspects of farming. We conclude that real-world case-study examples, carefully planned math-focused lessons, appropriate support materials including widely installable and user-friendly software, and training opportunities for teachers can help effective teaching of DST use and agriculture sustainability concepts. [ABSTRACT FROM AUTHOR]