In this activity, students use mathematics to understand tides and gravitation and how gravity works across astronomical distances, using an apparatus made from a slinky, meter stick, and a hook. A description of the mathematical relationships seen in the demonstration is included. The resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications.

Explore the role of charge in interatomic interactions. The forces attracting neutral atoms are called Van der Waals attractions, which can be weak or strong, depending on the atoms involved. Charged atoms (also known as ions) can repel or attract via Coulomb forces, and the forces involved are much stronger. Oppositely charged atoms attract to each other, while similarly charged atoms repel. The attractive forces between atoms have consequences for their interactions in physical, chemical and biological applications.

This model allows you to explore why polar and non-polar substances have very different boiling points. While all molecules are attracted to each other, some attractions are stronger than others. Non-polar molecules are attracted through a London dispersion attraction; polar molecules are attracted through both the London dispersion force and the stronger dipole-dipole attraction. The force of attractions between molecules has consequences for their interactions in physical, chemical and biological applications.

In this activity, a spinning bicycle wheel resists efforts to tilt it and point the axle in a new direction. Learners use the bicycle wheel like a giant gyroscope to explore angular momentum and torque. Learners can participate in the assembly of the Bicycle Wheel Gyro or use a preassembled unit to explore these concepts and go for an unexpected spin!

In this lesson, students will learn how cosmic rays were discovered and what they are - including their size and speed. Includes background information for the teacher, questions, activities and information about student preconceptions. This is lesson 1 of 4 from "The Cosmic Ray Telescope for the Effects of Radiation (CRaTER)."

Students randomly select jelly beans (or other candy) that represent genes for several human traits such as tongue-rolling ability and eye color. Then, working in pairs (preferably of mixed gender), students randomly choose new pairs of jelly beans from those corresponding to their own genotypes. The new pairs are placed on toothpicks to represent the chromosomes of the couple's offspring. Finally, students compare genotypes and phenotypes of parents and offspring for all the "couples" in the class. In particular, they look to see if there are cases where parents and offspring share the exact same genotype and/or phenotype, and consider how the results would differ if they repeated the simulation using more than four traits.

In this lesson from World Affairs Council - Seattle, students will learn about UN Sustainable Development Goal #6: Clean Water and Sanitation. Currently, 2 billion people live in water-stressed communities, and 3.5 billion lack safe sanitation. Students will investigate the causes and effects of unequal access to clean water and sanitation, focusing on the impact on women and children. They will explore current solutions and identify further actions needed. Through research, presentations, discussions, and a community project, students will deepen their understanding, develop problem-solving and collaboration skills, and learn about organizations addressing these issues. The lesson will also highlight the interconnectedness of UN Sustainable Development Goals. Ultimately, students will gain a comprehensive understanding of SDG #6 and the ability to advocate for clean water and sanitation as a fundamental human right.

Buddhism is one of the world’s largest religions and originated 2,500 years ago in India. Buddhists believe that the human life is one of suffering, and that meditation, spiritual and physical labor, and good behavior are the ways to achieve enlightenment, or nirvana.

Human biology is an interdisciplinary area of study that examines humans through the influences and interplay of many diverse fields such as genetics, evolution, physiology, anatomy, epidemiology, anthropology, ecology, nutrition, population genetics, and sociocultural influences; it is closely related to physical anthropology.

In this activity about electricity, learners produce a spark that they can feel, see, and hear. Learners rub a Styrofoam plate with wool to give it an electric charge. Then, they use the charged Styrofoam to charge an aluminum pie pan. Essentially, learners build an electrophorus (Greek for "charge carrier"). This resource also contains instructions on how to build a large charge carrier called a "Leyden Jar" using a plastic film can.

This activity is an outdoor lab investigating Newton's Third Law with film canister cannons.

In this simple exploration, a coiled phone cord slows the motion of a wave so you can see how a single pulse travels and what happens when two traveling wave pulses meet in the middle.

Definition of period and frequency for an object moving in a circle. Connecting period and frequency to the magnitude of the angular velocity.

Predicting which spinning disc has a larger radius from angular velocity and the linear velocity of a point on the edge.

Foil Leaf Electroscope. Aluminum leaves repel in the presence of a charged object. Created by Brit Cruise.

A survey course of discrete mathematics for non-physical science majors. Topics include systems of inequalities, linear programming, probability and probability distributions, and an introduction to descriptive statistics. The course emphasizes problem solving through the use of computer spreadsheets.

In this activity, learners will explore globes of frozen water to learn how to ask and then answer 'investigable' questions. The activity includes four short online videos: Introduction, Step-by-Step Demonstration, Going Deeper, and What's Going On. Also available are a concept map and a "Going Further" web page that suggests variations and extensions on this activity.

Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away. Arabic Language.

Resources to mark the 100th day of school with math activities. Challenge students to generate 100 different ways to represent the number 100. Students will easily generate 99 + 1 and 50 + 50, but encourage them to think out of the box. Challenge them to include examples from all of the NCTM Standards strands: number sense, numerical operations, geometry, measurement, algebra, patterns, data analysis, probability, discrete math, Create a class list to record the best entries. Some teachers write 100 in big bubble numeral style and then record the entries inside the numerals.

This video segment from 'Earth: The Operators' Manual' explores how we know that today's increased levels of CO2 are caused by humans burning fossil fuels and not by some natural process, such as volcanic out-gassing. Climate scientist Richard Alley provides a detailed step-by-step explanation that examines the physics and chemistry of different "flavors," or isotopes, of carbon in Earth's atmosphere.