ScienceMatter & MaterialsAges 11–12

Atoms, Elements & Compounds

Explain the differences between atoms, elements, and compounds; describe the simple Bohr model of the atom (nucleus with protons and neutrons, electrons in shells); and write and interpret chemical symbols and simple formulae

Lesson

Set out your lesson

Practise the bounded task in Atoms, Elements & Compounds; see exact limits before inferring broader coverage.

Before teaching

Use this short check, then start teaching.

Activity

Can distinguish symbol, subscript and object; models are simplified, not literal tiny solar systems.

Policy

Exact directed source edges retained; earlier authorship is not learner attainment.

Printer, credit, and teaching notes

Exact directed source edges retained; earlier authorship is not learner attainment.

Materials

These supplied stage cards
Scrap paper and pencil; oral/pointing response where appropriate

Sequence

Read readiness and decide on support without treating prerequisite authoring as learner readiness.
Open Show first and explain its model.
Use Guided Try with support and its separate adult key.
Close Show and guided keys before Try, unless this Try is explicitly supported.
Reflect on an actual attempt, including help used.

No Printer

Use the supplied screen cards; copying the exact task to paper is optional, not required.

Privacy

Use only invented scenarios and optional anonymous local notes. Do not request names, photos, family finances, medical data, accounts or uploads. Stop uncomfortable physical activity.

Use the complete materials on screen or print only the current sheet. Keep adult guidance out of learner view.

Next: Show

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Teaching approaches

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1 approach

Selected Default Gakuva

Practise the bounded task in Atoms, Elements & Compounds; see exact limits before inferring broader coverage.

Family records and proof options

Keep a record of your learning

Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.

View learner plans ($12/mo per learner) See sample family archive

Learning resources

Extra practice links — they do not replace Gakuva’s teaching approach.

PhET Interactive Simulations · Practice link — not the full lesson

Balancing Chemical Equations

Open practice(new tab)

Before you open · source notes

Balancing Chemical Equations supports hands-on exploration for Atoms, Elements & Compounds. Not every lab worksheet.

Free interactive page, no sign-in required for the tested path.

Before you open

Ask the learner what they changed in the sim or page and what they observed.

Opening this link does not save learning or assess mastery.

Source, access and review notes

Public PhET Interactive Simulations page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.

PhET Interactive Simulations. “Balancing Chemical Equations.” External page; Gakuva does not copy, host, embed, or redistribute materials.

Unknown — link only

Check understanding

Defines atom, element, and compound and distinguishes between them with examples
Draws a simple Bohr model of an atom labelling nucleus (protons/neutrons) and electron shells
Reads a chemical formula to identify the elements and number of each atom (e.g. H₂O, CO₂, NaCl)
Identifies the difference between a mixture and a compound

“If your child saw the formula H₂O on a label, could they explain what it means — which atoms are involved, how many of each, and why water is a compound rather than just a mixture of hydrogen and oxygen?”

Curriculum record

Type: Conceptual
Subject: Science
Domain: Matter & Materials
Age range: Ages 11–12

Standards

ngss-ms:MS-PS1-1uk-nc-2013:KS3.Sci.Chem.AEC.1uk-nc-2013:KS3.Sci.Chem.AEC.2uk-nc-2013:KS3.Sci.Chem.AEC.3