What Science Should My Child Know by Grade? A Parent's Guide

Parents often ask, “Is my child where they should be in science?” The honest answer is that science expectations vary by country, state and school, and children develop at different speeds. What you can do is get a general picture of the themes children usually meet at each stage, and follow them loosely at home.

This guide describes common themes, not standards codes. If you need to match a specific syllabus, see our curriculum alignment page.

Ages 5 to 8 (roughly K to grade 2)

At this stage science is about noticing and describing. Children usually explore:

Living things: what plants and animals need, how animals find food, simple food chains.
Materials: what things are made of, and whether they are hard, soft, bendy or waterproof.
Weather and seasons: observing the sky, wind and rain, and how days change through the year.
Light and sound: shadows, what light passes through, and how sounds are made.

The key skills are looking closely, comparing, asking questions and describing in simple words. Drawing is a legitimate science tool at this age.

At home: go outside and look. Sort objects by material. Track a shadow through the day. Plant a seed in a clear cup.

Ages 8 to 11 (roughly grades 3 to 5)

Children begin to explain how and why, and to test ideas fairly. Common themes:

Forces and motion: pushes, pulls, friction, magnets.
Life cycles and traits: how living things grow, change and differ from one another.
Earth and sky: the water cycle, rocks and erosion, the Moon, the Sun and the seasons.
Matter: solids, liquids and gases, mixing and dissolving.
Energy and circuits: heat moving, and simple electrical circuits.

The key skills are making a prediction, changing one thing at a time, measuring, recording results and drawing a conclusion from evidence.

At home: run a fair test, such as which surface makes a toy car roll farthest. Measure carefully and write the numbers down. Ask, “How do you know?”

Ages 11 to 14 (roughly grades 6 to 8)

Science becomes more abstract. Children use models for things too small, large or slow to see directly. Common themes:

Cells and body systems: the cell as the basic unit of life.
Genetics and evolution: how traits are passed on and how populations change over time.
Ecosystems: energy flowing through food webs, and how people affect habitats.
Matter and energy: particles, heat, chemical change, photosynthesis.
Earth systems: weather versus climate, plate movement, the solar system.
Data and claims: reading graphs, spotting weak evidence, separating cause from coincidence.

The key skills are building and testing models, controlling variables, working with data and explaining reasoning in writing.

At home: ask for evidence (“What would change your mind?”), look at a graph together, or compare two claims in the news.

How to follow along loosely at home

You don’t need to follow a strict sequence. A relaxed approach works well:

Choose a theme for a few weeks. For example, “water” or “light.”
Do one hands-on activity a week. Keep it short.
Read or watch something related and talk about it.
Keep a simple record, such as a notebook page per activity.
Revisit topics later. Children often understand an idea better the second time round.

If your child is in school, you can use home science to support whatever they are covering, or to explore things the school has no time for.

A note on “behind” and “ahead”

Don’t worry if your child hasn’t met every theme above. Curiosity and confidence matter more than coverage, and many topics can be picked up later. If an area seems tricky, slow down and go back to something concrete and hands-on.

Where to look next

Browse units by level, such as Materials for younger children, Forces and Magnets for the middle years and Hot and Cold for older children. Our parents page explains how the lessons work.