--- title: 3P.1.1.1.1 description: 3P.1.1.1.1 Ask questions based on observations about why objects in darkness can be seen only when illuminated. image: https://www.knowatom.com/hubfs/Right%20Image.png --- [![Teacher Login](https://no-cache.hubspot.com/cta/default/347944/f56bee57-133e-4975-8055-799f1f23588b.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/f56bee57-133e-4975-8055-799f1f23588b) [Teacher Login](https://app.knowatom.com/signin) [![KnowAtom Logo](https://www.knowatom.com/hubfs/KnowAtom%20Logo.svg "KnowAtom Logo")](https://www.knowatom.com/) # 3P.1.1.1.1 Ask questions based on observations about why objects in darkness can be seen only when illuminated. [![Download a Sample Unit](https://no-cache.hubspot.com/cta/default/347944/20eee377-e175-48fe-a039-ae723137a2a6.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/20eee377-e175-48fe-a039-ae723137a2a6) Science & Engineering Practices - [Developing and using models](https://www.knowatom.com/developing-and-using-models) - [Planning and carrying out investigations](https://www.knowatom.com/planning-and-carrying-out-investigations) - [Constructing explanations and designing solutions](https://www.knowatom.com/constructing-explanations-and-designing-solutions) - [Engaging in argument from evidence](https://www.knowatom.com/engaging-in-argument-from-evidence) - [Obtaining evaluating and communicating information](https://www.knowatom.com/obtaining-evaluating-and-communicating-information) Disciplinary Core Ideas - [Weather and Climate](https://www.knowatom.com/weather-and-climate) - [Conservation of Energy and Energy Transfer](https://www.knowatom.com/conservation-of-energy-and-energy-transfer) Crosscutting Concepts - [Patterns](https://www.knowatom.com/patterns) - [Cause and Effect](https://www.knowatom.com/cause-and-effect) [![New call-to-action](https://no-cache.hubspot.com/cta/default/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f) ## Browse 3P.1.1.1.1 Lesson Plans Grade Ranges All K-2 3-5 6-8 [![](https://www.knowatom.com/hubfs/Light-2.jpg) ](https://www.knowatom.com/science-phenomena-videos/1st-grade-science/light) ## [Light In the last unit, students explored the relationship between vibrations and sound. In this unit, students continue to explore the phenomena of human senses, focusing on how objects can be seen when they are illuminated by a source of light, and how light passes through opaque, transparent, and translucent materials differently. Students then investigate how a beam of light changes when it hits a mirror.](https://www.knowatom.com/science-phenomena-videos/1st-grade-science/light) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/1st-grade-science/light) [![](https://www.knowatom.com/hubfs/image4-Oct-09-2023-05-38-52-6468-AM.png) ](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/engineering-information-transfer) ## [Engineering Information Transfer In this unit, students build on what they know about the science phenomena of energy transfer to focus on information transfer and how different technologies use patterns of sound, light, or numbers to transmit information. This page showcases key components of this lesson. ](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/engineering-information-transfer) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/4th-grade-science/engineering-information-transfer) [![](https://www.knowatom.com/hubfs/image1-Oct-07-2023-01-22-43-4999-PM.png) ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-water-prisms) ## [Engineering Water Prisms In this unit, students focus on the science phenomenon of light energy, investigating how it travels in a straight line and interacts with matter. Students apply their knowledge to design a prototype with mirrors and water that creates rainbows. This page showcases each component of the lesson. ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-water-prisms) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-water-prisms) [![](https://www.knowatom.com/hubfs/image4-Oct-08-2023-07-11-53-8693-PM.png) ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/engineering-library-scopes) ## [Engineering Library Scopes In this unit, students focus on light energy, investigating the science phenomena of how light moves when it interacts with different kinds of matter. Students use scientific knowledge about light to engineer a device that uses mirrors to redirect light. This page is a high-level extract of this lesson. ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/engineering-library-scopes) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/5th-grade-science/engineering-library-scopes) Standards citation: NGSS Lead States. 2013. *Next Generation Science Standards: For States, By State*s. Washington, DC: The National Academies Press. 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