--- title: 3.ETS1.2 description: 3.ETS1.2 Apply evidence or research to support a design solution 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/) # 3.ETS1.2 Apply evidence or research to support a design solution [![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 3.ETS1.2 Lesson Plans Grade Ranges All K-2 3-5 6-8 [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-01-01-27-2256-PM.png) ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-skyscrapers) ## [Engineering Skyscrapers In this unit, students analyze the science phenomena of different forces that can act on all structures. They begin by exploring how forces act on different materials and shapes. They then use what they know about forces to design a skyscraper prototype in this lesson, evaluating how their design relates to the ability of the skyscraper to withstand the weight of the structure and the people on it, as well as the force of wind.](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-skyscrapers) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-skyscrapers) [![](https://www.knowatom.com/hubfs/image4-Oct-07-2023-01-10-50-1379-PM.png) ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-pick-and-place-devices) ## [Engineering Pick-and-Place Devices In this unit, students focus on science phenomena related to electric and magnetic forces. First, students explore how materials can become electrically charged and then attract or repel other materials without touching them. ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-pick-and-place-devices) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-pick-and-place-devices) [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-01-20-16-8669-PM.png) ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-hearing-toys) ## [Engineering Hearing Toys In this unit, students analyze the science phenomenon of how sound is a form of energy that travels through vibrating molecules. They test whether sound travels through both liquid and solid mediums and observe how sound makes sand particles vibrate. In this lesson, students apply their scientific knowledge of sound to an engineering challenge.](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-hearing-toys) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/3rd-grade-science/engineering-hearing-toys) [![](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) 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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