Senses, Brain, and Action
Aligned to 4-LS1-2 — Next Generation Science Standards.
What this lesson teaches
Animals take in information about the world through senses like sight, hearing, and smell. That information travels to the brain, which decides what to do and sends signals telling the body how to respond.
Worked example
When a rabbit hears a twig snap, its ears send the sound to its brain, the brain senses danger, and it tells the legs to hop away fast.
Practice questions
- Clap your hands near a friend. Which sense noticed it, and how did their body respond?
- Draw the path from a dog's nose smelling food, to its brain, to its tail wagging.
- Explain the three steps an animal uses to sense something and then react to it.
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
Sentidos, cerebro y acción
Los animales reciben información del mundo a través de sus sentidos, como la vista, el oído y el olfato. Esa información viaja al cerebro, que decide qué hacer y envía señales que le dicen al cuerpo cómo responder.
Ejemplo: Cuando un conejo escucha que se rompe una ramita, sus orejas envían el sonido a su cerebro, el cerebro percibe el peligro y les dice a sus patas que salten para escapar rápido.
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