Grade 4
Light and vision, plant and animal structures, senses, brain processing, and responses.
Explain how light allows objects to be seen.
An object can be seen when light reflected from its surface enters the eye. Without light, eyes cannot detect the object.
Light can bounce off surfaces. Smooth, shiny surfaces reflect light differently than rough, dull surfaces.
Connect plant and animal parts to survival functions.
Plants and animals have internal and external structures that help them grow, survive, behave, and reproduce.
Roots absorb water, stems support plants, eyes detect light, ears detect sound, and bones support animal bodies.
Trace how animals receive information and respond.
Animals use senses to gather information from the environment. Eyes, ears, skin, noses, and tongues detect different kinds of information.
The brain processes information and helps an animal respond. A rabbit may hear a sound, process danger, and run away.