Science
Grade 4 Science: Students investigate electricity and circuits, properties of sound and light, food chains and webs, Earth's internal structure, and the processes of erosion and weathering.
Physical Science: Energy and Waves
Electricity and Circuits
Students explore the concepts of electrical energy, conductors, and insulators through hands-on circuit building with batteries, bulbs, and wires. They distinguish between open and closed circuits and compare series and parallel circuits.
Properties of Sound
Students investigate how sound is produced by vibrating objects and travels through different media as waves. They explore how pitch and volume are related to the frequency and amplitude of sound waves.
Properties of Light
Students examine how light travels in straight lines and behaves when it encounters different materials: reflection, refraction, and absorption. They use prisms to explore the visible spectrum and investigate color perception.
Life and Earth Science
Food Chains and Food Webs
Students construct and analyze food chains and food webs to understand the flow of energy through ecosystems. They identify producers, consumers, and decomposers and explain ecological interdependence.
Ecosystems and Habitats
Students compare major ecosystems including forests, grasslands, deserts, and aquatic environments. They examine organism adaptations and investigate how environmental changes affect populations.
Earth's Layers and Structure
Students learn about the four main layers of the Earth (crust, mantle, outer core, inner core) and their properties. This understanding connects to volcanic activity and earthquake phenomena.
Weathering, Erosion, and Deposition
Students investigate how water, wind, ice, and plant roots break down and transport rock and soil through weathering, erosion, and deposition. They explore human strategies to prevent soil erosion.