Growth problems among children under five are influenced by the quality of complementary feeding, exposure to environmentally related diseases, and the accuracy of growth monitoring. This community service activity aimed to strengthen the capacity of health cadres and mothers of children under five through education on complementary feeding, Community-Based Total Sanitation (CBTS), and anthropometric measurement training. The activity was conducted in Ganti Urban Village, Donggala Regency, on 13–14 July 2026, involving 20 participants consisting of 10 health cadres and 10 mothers of children under five. The methods included interactive lectures, case discussions, menu demonstrations, mapping of contamination pathways, sanitation commitment triggering, measurement simulations, guided practice, as well as pre-tests and post-tests. The complementary feeding knowledge score among health cadres increased from 62.5 to 92.0, while among mothers of children under five it increased from 45.0 to 85.5. Sanitation knowledge scores increased from 70.0 to 95.0 among health cadres and from 52.5 to 87.5 among mothers of children under five. The anthropometric measurement skills of health cadres increased from 65.0 to 96.5. The greatest improvement was observed in complementary feeding knowledge among mothers of children under five, with an increase of 40.5 points. The integration of contextual education, sanitation reflection, and hands-on practice effectively strengthened participants’ knowledge and skills in the short term. Regular follow-up through integrated health service posts, supervision of anthropometric measurements, and monitoring of sanitation practices are needed to ensure that these learning outcomes are translated into sustainable improvements in household practices.
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