In this lesson, students will discover the results of force applied to an object using balls of varying weights.

This scientific article discusses two aspects about the sphere shape of our planet: the Earth concept through history of science and gravity as the source for ball-shaped structures in the universe. The text is written in child-friendly language for native readers age 9 and up.

This scientific article provides an overview over static electricty. It starts with the discovery of static electricity and the ethymology of the word "electron." Then two different experiments are explained based on static electricity. In the last part the article explains the phenomenon on a molecular level. The text is written for native speakers age 9 and up.

This scientific article describes the physical phenomenon of gravitation. Starting with the discovery by Isaac Newton, the article explains the principles of gravitation, but also finds answers to the questions how heavy our planet is and why we still can lift a chair. The text is written for native speakers age 9 and up in child-friendly language.

This article provides links to lessons and units about birds, bird characteristics, and penguins. Ideas for literacy integration are included, and all lessons are aligned to national standards.

In this STEM lesson, students use balloons to demonstrate concepts applied by jet and rocket engines to supply thrust for movement. They will observe how unequal pressure creates power, explain how air power can help airplanes fly, and construct a working model of an air engine-balloon-powered rocket to launch the greatest payload possible to the classroom ceiling.

In this hands-on lesson, students explore the effect of heating and cooling on the dispersal of food coloring in water. Students will observe how heat speeds up changes in materials. Real life connections are used, and lesson extensions such as probing questions, teacher and student activity sheets, assessment and a web link is included.

This brief video lesson discusses the concepts of work and power and applies them to two common objects - a lightbulb and a grandfather clock. Discussion/assessment questions and suggested supplemental resources are also included.

In this lesson, students will work in small groups to experience friction in action as they investigate the movement of toy cars. Students use the scientific process to hypothesize and then test how toy cars travel down ramps using differing variables such as mass and types of materials. They also review and share their results with the class.

This issue of the free online magazine, Beyond Penguins and Polar Bears, examines physical science concepts, such as heat, conductors, and insulation, and applies this knowledge to the animals and people in the Arctic and Antarctica.

In this activity, students use data collected in previous lessons ("The Science of Snow" and "Lake Ice and Energy Transfer") to determine the thermal conductivity of snow and mean conductive heat flow.

In this activity, students use data collected in a previous lesson ("The Science of Snow") to determine snow temperature gradient.

Concepts underlying the first of the Essential Principles of the Climate Sciences are aligned with topics typically taught in the elementary grades. This article identifies lessons that will help elementary students develop an understanding of how Sun's light warms Earth and how variations in daylight hours are associated with seasonal change. This article appears in the free, online magazine Beyond Weather and the Water Cycle.

Students use plasticine and sand to explore how adding other elements can alter the ductility of a metal.

This simulation provides practice in building Lewis Dot Structures from atoms and ionic compounds from the component ions.

In this lesson, students use colored candy to represent subatomic particles and make a model of an atom (Bohr model). This helps with student understanding of the sub-atomic components of an atom as well as nuclear notation of the periodic table.

This resource is a compilation of text and other elements that serves as a multimedia learning experience for students. The resource reviews atomic structure and how the numbers of subatomic particles can be determined based on an element's placement on the periodic table.

This resource is a compilation of text and other elements that serves as a multimedia learning experience for students. The resource reviews how chemical equations are symbolic representations of chemical reactions. Practice exercises involving balancing equations are provided.

This resource is a compilation of text and other elements that serves as a multimedia learning experience for students. The resource reviews how chemical formulas represent compounds.