Habitats and communities
                        																            	
		        
        		
				
					
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            								            			    Learn about habitats and what living things need to survive.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    Bizarre animal adaptations.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             						                                                                  			    
				                        
			    
            								            			    How humans change environments and habitats.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             						                                                                  			    
				                        
			    
            								            			    How animals change their habitats.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    					 
				    				
				
									
    
		    	    
			
		            	
    
		    	    
			
		                            	
    
		    	    
				
		            	
    
		    	    
			
		                            	
								
				
				
				                                                                     					    					    
					    						    
                                                        					    						    
                                                             
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    How lightbulbs are made and how they work.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    Learn about light and optics.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    					 
				    				
				
									
    
		    	    
			
		            	
    
		    	    
			
		                            	
    
		    	    
			
		                            	
								
				
				
				                                                                     					    					    
					    						    
							            	
		        
        		
				
				
					   
                   
        			
    	
	
					                                              
    		            
                    
                            		        
								            			    Compare the brightness of different light sources using an oil spot photometer.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        			
    	
	
					                                              
    		            
                    
                            		        
								            			    Learn about lenses and bending light as you build your own projector.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    						    
                                                        					    					 
				    				
				
									
    
		    	    
				
		            	
    
		    	    
			
		                            	
								
				
				
				                                                                     					    					    
					    						    
                                                        					    						    
                                                             
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    Learn about sound frequency and hearing.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    					 
				    				
				
									
    
		    	    
			
		            	
    
		    	    
			
		                            	
    
		    	    
			
		                            	
								
				
				
				                                                                     					    					    
					    						    
							            	
		        
        		
				
				
					   
                   
        			
    	
	
					                                              
    		            
                    
                            		        
								            			    Make sprinkles dance with vibrations caused by sound.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        			
    	
	
					                                              
    		            
                    
                            		        
								            			    Make patterns with sound and salt.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    						    
                                                        					    					 
				    				
				
									
    
		    	    
				
		            	
								
				
				
									                            					Rocks, minerals, and erosion
                        																            	
		        
        		
				
					
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            								            			    Learn about weathering and erosion.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    The three main types of rocks.
            			
					
				
				
		            			
		                        			        
            	                  		
											
    		    			
					
		        	 	
						     
                                                             
                                                        					    						    
							            	
		        
        		
				
				
					   
                   
        				
    	
	
		        
		             									                                                    			    
				                        
			    
            								            			    Break into geodes to find amazing crystals.