Which is colder -12 or -18? Temperature is natural real-world application of ordering rational numbers. It's also fun to talk about the lowest recorded temperature on Earth. Take the time to discuss this inquiry with your class. 

Students analyze ozone data.  In this atmosphere lesson, students will use a NASA resource to gather data for different regions of the Earth.  Students will then create a graph for their data and answer related questions. 

Students explore the concept of running a business. For this running a business lesson, students put their plan of action into practice. Students market a product and try to maximize profit.

Lars in Antarctica needs help. Can you help him with all the months of the year and with mass?