This reviewer covers the DepEd MELC-aligned Grade 4 Science competencies. Read each section, study the tables, and remember the exam hacks.
Matter and Its Changes
Materials can change in size, shape, and state. Changes may be temporary (reversible) or permanent. Mixtures can be separated by hand-picking, sieving, filtering, or evaporation.
| Change | Type | Example |
|---|---|---|
| Melting ice | Reversible | Freeze it back |
| Burning wood | Permanent | Becomes ash |
| Cutting paper | Reversible (shape) | Pieces remain paper |
Plants and Animals
Plants make their own food through their parts; animals depend on plants and other animals. Learn the parts and functions that help them survive in their habitats.
Energy in Our Lives
Light, heat, sound, and electricity are forms of energy. Light travels in straight lines, heat moves from hot to cold, and sound is made by vibrations.
Conductors (metal) let heat and electricity pass through; insulators (wood, rubber, plastic) do not. That is why pot handles are made of plastic.
Earth and Its Surroundings
Study soil types, bodies of water, weather, and the importance of the Sun. Learn safety during natural events and ways to care for the environment.