Science

Work through the topics in order, or jump to the one you need.

1. Physical & Chemical Changes Grade 5 matter: what matter is, states of matter, physical changes (size, shape, state; often reversible), chemical changes (a new substance forms), the five signs of a chemical change, everyday examples, and how to classify a change.
2. Earth & Space Grade 5 space science: how Earth's rotation causes day and night, how its revolution makes a year and a leap day, why the Sun seems to move across the sky, why shadows change length and direction, and why we see different stars in different seasons. 🎥 1 video
3. Earth's Systems Grade 5 Earth science: the geosphere, hydrosphere, atmosphere and biosphere, what each is made of, how the spheres interact (erosion, gas exchange, the water cycle, volcanoes, forest fires) and how people affect them.
4. Ecosystems & Energy Flow Grade 5 life science: the Sun as the energy source, producers, consumers and decomposers, food chains and food webs, trophic levels and the energy pyramid, why energy is lost, what happens when an organism disappears, populations, limiting factors and carrying capacity.
5. Protecting the Environment Grade 5 environmental science: how human activities harm ecosystems, why ecosystems matter, conservation vs restoration, renewable and nonrenewable resources, sustainability, the 3 Rs, habitat protection, the ripple effect, and how to plan a solution from cause to effect.
6. Matter & Particles Grade 5 science (5-PS1-1): what matter is, matter vs not matter, evidence that matter is made of particles too small to see (dissolving sugar, air in a balloon, smells, evaporation), particles in solids, liquids and gases, mass is kept when things dissolve, and writing a claim–evidence–reasoning ans