Ivy Waters International Standards · G4.S-02
Version 2.2.0 · 2026 · © 2026 Ivy Waters International. Licensed under CC BY 4.0.
Ages are the anchor. Grade names are Ivy Waters stage labels for this framework, not a claim about any national school system.
Science & Innovation
Your child understands that light travels in straight lines, can bounce off reflective surfaces, and behaves differently when passing through transparent, translucent, and opaque materials.
In real life
Your child shines a torch through clear glass, baking paper, and a book. They sort them aloud: "All the light, some light, no light. So this one is translucent."
Standards are permanent: an ID issued in this edition keeps pointing at the same standard. Cite it like this.
Ivy Waters International Standards v2.2.0 (2026). Standard G4.S-02: Optical Physics (Light Transmission & Reflection). https://ivywaters.com/standards/G4.S-02
Ages are the anchor. Grade names are Ivy Waters stage labels for this framework, not a claim about any national school system.
A machine-readable CC BY 4.0 release is published for reuse and integration. Schools and tools may display, adapt, and map their own records against it with attribution.
Ivy Waters International Standards · Version 2.2.0 · 2026 · © 2026 Ivy Waters International. Licensed under CC BY 4.0.
