La huerta silenciosa: El suelo como depósito de nutrientes

Section role: supports the introduction section while the teacher presents the central mystery of the lesson and elicits initial student hypotheses about soil and nutrient cycles. Slides: (1) Title — 'La huerta silenciosa: ¿A dónde se fueron los nutrientes?'; (2) Inquiry Connection — bullets: IB Central Idea connecting atmospheric gases to solid nutrients in living bodies; (3) Guiding Questions — bullets: the three questions regarding atoms in the air, the soil as a battery, and degraded soil cycles; (4) The Provocation — image of a yellowing sickly tomato plant and compacted soil in a school garden; (5) The Paradox — bullets: 'Si el aire tiene un 78% de nitrógeno, ¿por qué mueren las plantas?'; (6) Hypothesis Board — visual template with columns for 'Causas del aire' and 'Causas del suelo'; (7) Closing slide — '¿Cuál es tu hipótesis inicial sobre este misterio?' — handing control back to the teacher for small group discussions.

Lara de Teachy