Curiosity, period by period — fitted to your timetable.
Tell Meyy your periods and their length; it plans every chapter of Curiosity to fit, and you tick off sections as you teach.
What Is Changing Around Us?
Observe and record changes · Hands-on Science
This opening unit orients students to the chapter's central question by grounding it in changes they can directly observe. Watch for students who conflate 'what changed' with 'why it changed' — keep the focus firmly on observable properties at this stage. A useful checkpoint is whether every group can name at least three distinct properties (shape, size, state, smell) that can change.
0-8Teacher introduces the chapter's framing question — can the changes around us be sorted into meaningful categories? — using the four opening scenarios of ice melting, a rosebud blooming, water warming, and a banana browning.
8-30Groups rotate through observation stations (melting ice, chopped vegetables, boiling water, cut paper, drying cloth) and record what is changing — shape, size, state, smell, or other sensory properties — in an observation table.
30-40Whole-class share-out: groups report their observations and the teacher compiles a class list of properties that changed, leaving the question of whether these changes are fundamentally the same or different open for the next unit.
Competency (C-1.1). Classification of matter by observable physical and chemical characteristics.
Learning outcome. Students can observe a given change, identify which physical property has changed, and state whether the underlying substance has remained the same, using evidence from direct observation.
A student folds a square sheet of paper into an origami crane. Which statement correctly describes what has changed and what has stayed the same?
- A A new substance has formed because the paper now looks completely different.
- B Both the shape and the substance of the paper have changed because the original flat sheet no longer exists.
- C The shape of the paper has changed; the paper itself is still the same substance.
- D The size of the paper has increased because it is folded into a three-dimensional shape.
C. The shape of the paper has changed; the paper itself is still the same substance.
What each wrong option reveals
- A The student confuses a change in appearance with the formation of a new substance — the misconception that looking different means being different.
- B The student conflates the change in form with a change in substance identity, not recognising that the original material persists even when the original flat form is gone.
- D The student has not grasped that folding preserves overall material amount; they may confuse three-dimensional shape with an increase in physical size.
Also saved as 9 periods or 11 periods or 13 periods.
- 2Same Substance, Different Shape
Observe and record changes - 3Does Blowing Breath Change Lime Water?
Classify changes as physical or chemical using observable evidence - 4Vinegar and Baking Soda — What Comes Out?
Classify changes as physical or chemical using observable evidence - 5Rusting and Combustion — More Chemical Changes
Classify changes as physical or chemical using observable evidence - 6What Does a Flame Need? The Fire Triangle
Classify changes as physical or chemical using observable evidence - 7The Burning Candle — One Process, Two Types of Change
Classify changes as physical or chemical using observable evidence - 8Can We Undo the Change?
Determine reversibility and apply particulate reasoning - 9Why Can't a Chemical Change Be Undone? Particulate Reasoning
Determine reversibility and apply particulate reasoning - 10Are All Changes Desirable? Sorting by Impact
Determine reversibility and apply particulate reasoning - 11How Do Rocks Break Down? Discovering Weathering
Explain slow natural changes as physical-chemical combinations using reversibility and particulate reasoning - 12Erosion and Sediment — A One-Way Journey
Explain slow natural changes as physical-chemical combinations using reversibility and particulate reasoning - 13Applying the Full Framework to Unfamiliar Contexts
Explain slow natural changes as physical-chemical combinations using reversibility and particulate reasoning - 14Building the Evidence Trail: Classification with Justification
Explain slow natural changes as physical-chemical combinations using reversibility and particulate reasoning - 15The Steel Bridge and the Matchstick Forest: A Change Investigator's Casebook
Explain slow natural changes as physical-chemical combinations using reversibility and particulate reasoning
- 1. The Ever-Evolving World of Science
- 2. Acidic, Basic, and Neutral
- 3. Electricity — Circuits and their Components
- 4. The World of Metals and Non-metals
- 5. Changes Around Us — Physical and Chemical
- 6. Adolescence — A Stage of Growth and Change
- 7. Heat Transfer in Nature
- 8. Measurement of Time and Motion
- 9. Life Processes in Animals
- 10. Life Processes in Plants
- 11. Light — Shadows and Reflections
- 12. Earth, Moon, and the Sun
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