--- title: 2.PS.1 description: 2.PS.1 Forces change the motion of an objec 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/) # 2.PS.1 Forces change the motion of an objec [![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 2.PS.1 Lesson Plans Grade Ranges All K-2 3-5 6-8 [![](https://www.knowatom.com/hubfs/image2-Oct-07-2023-10-22-11-9967-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) ## [Matter and Properties In 2nd grade, students conduct investigations, carry out experiments, and apply their scientific knowledge to engineer prototype solutions. In this unit, students investigate the science phenomenon of properties of different kinds of matter, connecting a material’s properties with the functions for which it is used. ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/matter-and-properties) [![](https://www.knowatom.com/hubfs/image2-Oct-07-2023-10-26-56-0229-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/earth-events) ## [Earth Events In the last unit, students explored the properties of different kinds of matter, connecting a material’s properties with the functions for which it is used. In this unit, students focus on Earth materials and the science phenomena of processes that change them (specifically weathering and erosion). ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/earth-events) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/earth-events) [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-10-28-21-7007-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/controlling-erosion) ## [Controlling Erosion In this unit, students explore the science phenomena of different processes that change Earth’s surface over time. Once students have investigated how wind and water change the shape of the land, they use their scientific knowledge to engineer a solution that prevents rainwater from washing away a sandy hillside. This page showcases key components of this lesson. ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/controlling-erosion) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/controlling-erosion) [![](https://www.knowatom.com/hubfs/image1-Oct-07-2023-11-07-17-5091-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/action-reaction-forces) ## [Action-Reaction Forces In the last unit, students explored how shelters help animals survive in their environment. In this unit, students investigate the relationship between forces and motion, building propeller cars to observe action-reaction forces, the relationship between the distance their car travels and the amount of force applied, and how friction affects motion.](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/action-reaction-forces) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/action-reaction-forces) [![](https://www.knowatom.com/hubfs/image2-3.png) ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/pushes-and-pulls) ## [Pushes and Pulls In the third and final unit of Kindergarten, students investigate how pushes and pulls are forces that change the motion of an object. They apply their scientific knowledge to design a solution that solves a problem.](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/pushes-and-pulls) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/pushes-and-pulls) [![](https://www.knowatom.com/hubfs/image3-3.png) ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/forces-and-motion) ## [Forces and Motion In this unit, students explore how forces cause an object’s motion to change. They begin by exploring how objects move in different directions when they are pushed or pulled, and then investigate how changing the strength of a force changes the distance an object moves.](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/forces-and-motion) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/forces-and-motion) [![](https://www.knowatom.com/hubfs/image3-3.png) ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/engineering-marble-movers) ## [Engineering Marble Movers In this unit, students discover that pushes and pulls are forces that change the motion of an object. They begin by exploring how objects move in different directions when they are pushed or pulled, and then investigate how changing the strength of a force changes the distance an object moves. They then use a model to see how friction affects the distance and speed with which an object moves over a surface. ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/engineering-marble-movers) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/kindergarten-science/engineering-marble-movers) [![](https://www.knowatom.com/hubfs/image1-Oct-07-2023-11-14-26-7861-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/floating-and-sinking) ## [Floating and Sinking In the last unit, students used propeller cars to explore the relationship between forces and motion. In this unit, students continue to explore vehicles with a focus on boats and specifically the science phenomena of properties that cause objects such as boats to float or sink. ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/floating-and-sinking) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/floating-and-sinking) [![](https://www.knowatom.com/hubfs/image3-Oct-07-2023-11-18-04-1048-AM.png) ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/engineering-boats) ## [Engineering Boats In this unit, students investigate what makes an object float or sink, exploring the science phenomena of properties of objects that float and sink. This page is a high-level extract of the last lesson in 2nd grade that has students applying their knowledge about the relationship between an object’s properties and its ability to float.](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/engineering-boats) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/2nd-grade-science/engineering-boats) Standards citation: NGSS Lead States. 2013. *Next Generation Science Standards: For States, By State*s. Washington, DC: The National Academies Press. Neither WestEd nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of this product, and do not endorse it. ![KnowAtom Logo](https://www.knowatom.com/hubfs/KnowAtom%20Logo.svg "KnowAtom Logo") Quick Links Resources Sign Up for Our Blog ### Sign Up for Our Blog Connect with Us - - - - © 2026 KnowAtom LLC  •  10 Brady Drive Unit 3   •  Ipswich MA •   01938 USA [DO NOT SELL MY PERSONAL INFORMATION](https://www.knowatom.com/do-not-sell-my-personal-information) | [Privacy Policy](https://www.knowatom.com/privacy-policy) | [Terms of Use](https://www.knowatom.com/terms-of-use) ```json { "@context" : "http://schema.org", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "USA", "addressLocality" : "Salem", "addressRegion" : "MA", "postalCode" : "01970", "streetAddress" : "27 Congress Suite 410" }, "alternateName" : "KA", "areaServed" : { "@type" : "GeoCircle", "geoMidpoint" : { "@type" : "GeoCoordinates", "latitude" : "+42.5182274", "longitude" : "-70.8877569" }, "geoRadius" : "150 km" }, "description" : "Next Generation Science STEM Curriculum", "email" : "fvigeant@knowatom.com", "image" : "https://www.knowatom.com/hubfs/KA-GSD.png", "logo" : "https://www.knowatom.com/hubfs/Knowatom-2017/Image/logo-1.png", "mainEntityOfPage" : { "@id" : "https://www.knowatom.com/2.ps.1", "@type" : "WebPage", "description" : "2.PS.1 Forces change the motion of an objec" }, "name" : "KnowAtom", "sameAs" : [ "https://www.facebook.com/KnowAtom", "https://twitter.com/KnowAtom", "https://www.youtube.com/channel/UCS0rbN0RfqaU1xaISrdVpTA", "https://plus.google.com/110709105138117096940" ], "telephone" : "(617) 475-3475", "url" : "https://www.knowatom.com" } ```