Taking Apart & Rebuilding
Observe that an object made of a small set of pieces can be disassembled and made into a new object, understanding that the pieces still exist
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Teaching approaches
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Taking Apart & Rebuilding means seeing that pieces can be taken apart and rebuilt into something new while the pieces still exist. We will practise once together, then check a fresh example.
Spend about 12 minutes taking apart one small build and making a new one, then checking the piece idea.
Track the same pieces through disassembly and a new arrangement.
Track the same pieces through disassembly and a new arrangement.
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Practice this concept
Start practiceTaking Apart & Rebuilding practice
Choose facts about pieces and rebuilding.
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
PhET Interactive Simulations · Practice link — not the full lesson
States of Matter: Basics
Before you open · source notes
States of Matter: Basics supports hands-on exploration for Taking Apart & Rebuilding. Not every lab worksheet.
Free interactive page, no sign-in required for the tested path.
Before you openAsk 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. “States of Matter: Basics.” External page; Gakuva does not copy, host, embed, or redistribute materials.
Unknown — link only
Check understanding
- Explain that taking apart an object and rebuilding it uses the same pieces in a new arrangement
- Describe how the pieces themselves don't change even though the object looks different
- Give an everyday example of reusing materials to make something new
“If your child builds a tower with building bricks and then takes it apart to build a car, can they explain that the same bricks are used but arranged differently?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Matter & Materials
- Age range
- Ages 7–8
Standards