Help
                            Support the Future of PhET!
                        
                            With over 95 sims (and growing!), PhET must build a network of support modeled upon NPR and
                            PBS. And, just like their listeners and viewers who donate, you, our users, can make a
                            difference.
                         
                        
                            Please consider donating to PhET. Gifts as small as $10, $20, or $50 help develop, maintain
                            and support our growing library of sims.
                         
                        
                            
                                 
                             
                            All donations are tax deductible.
                         
                        
                        Upcoming Events:
                        
                            Cyberlearning Tools for STEM
                                Education 
                            Berkeley, CA 
                            March 8-9, 2011
                         
                        
                            NSTA Annual
                                Conference 
                            San Francisco, CA 
                            March 10-13, 2011
                         
                        
                            ISTE 2011 
                            Philadelphia, PA 
                            June 26-29, 2011
                         
                        
                            ACS
                                Fall 2011 National Meeting 
                            Denver, CO 
                            August 28-Sept. 1, 2011
                         
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                        PhET's Foray into Social Media
                        
                            PhET is coming of age...at least on Facebook, Twitter and our blog.
                         
                        
                            Be the first to learn about new sims, new teacher activities, articles and newsletters. We'd
                            also love to hear how you use PhET in your classrooms. Spread the word so PhET can go
                            viral...
                         
                        
                            Join us on  
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                                our blog
                         
                         
                        Featured Sims:
                        Explore Floating and Sinking with the Density and
                            Buoyancy
                            Sims
                        
                            
                                
                                    
                                         
                                    
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                                    Density
                                    
                                        Explore how blocks of different materials and sizes float or sink with the new
                                        Density
                                            sim. Create your own block with adjustable mass and volume, and predict
                                        when
                                        your block will start to float. Develop experiments to determine the density of
                                        mystery objects.
                                     
                                    
                                        The Density sim includes a set of great teaching ideas with pre-lab, post-lab,
                                        teaching notes and sim activities to get you started on designing your own
                                        lesson plan.
                                     
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                                    Buoyancy
                                    
                                        Learn why objects float or sink with the Buoyancy
                                        sim. Explore the key forces at work as you modify your block, drag it under
                                        the surface, or change the fluid. Use the movable scale to weigh objects in and
                                        out of water, or anywhere in between.
                                     
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                        Learn How the Periodic Table Works with Build An
                            Atom
                        
                            
                                
                                    
                                         
                                    
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                                    Build an Atom
                                    Build an atom out of protons, neutrons, and electrons with the
                                    Build
                                        An Atom sim.
                                    Learn about the mass, charge, structure, and nomenclature of elements in the
                                    periodic table. With this sim, students will learn
                                    
                                        - What makes up an atom
 
                                        - How protons are connected to element identity
 
                                        - How neutrons affect nucleus stability
 
                                        - How protons and electrons affect ionic charge
 
                                        - How to describe the mass and charge of the subatomic particles
 
                                     
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                        Check Out These Other New Simuations:
                        
                         
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