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In this group activity, learners will mark important developments of life on Earth on a timeline (each foot in length representing 200 million years).

Exponga estos pósteres en el salón o déjelos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en línea.

In this activity, learners build a model of a self-sustaining habitat (growing grass and beans from seeds).

In this activity, learners survey living organisms near where they live or go to school, and create a local field guide.