Sunday, September 26, 2010

Melting Icebergs

What happens if the polar ice caps melt?


    The experiement allows you to visualize how the glaciers melt and the water level increases. First, the students will be able to identify with the natural process of melting glaciers. If the polar ice caps melted(ice cubes) at a normal rate, then it would provide fresh water; however, if the ice cubes are melting too fast then fresh snow that replaces the melting ice is unable to maintain the size of  any glacier. The glaciers melting more than required can cause catastrophes. Some areas will flood, other areas will have droughts. Also, agriculture will be affected in all the areas.

What other questions do you have about this Science Inquiry Experience?

--What formula is used to identify the rate that the polar ice melts?
--After determining the rate at which the ice melts, how would you predict the weather forecast?
--How can we control the melting of the glaciers in the experiment?

Sunday, September 19, 2010

5 E's Strategy and Erosion

I have been using the 5E's (Engage, Explore, Elaborate, Explain, and Evaluate) strategy for one year now and I do like it; however, I rarely complete my planned 45 minute lessons. With this strategy, students' are constantly engaged; therefore, it is sometimes difficult to complete a lesson. It keeps me interested to see my students interested. 

In my erosion lesson that I plan to implement, I can see the students getting lost on configuring the slope to prevent erosion from taking place on the school's outside basketball court. The students begin the lesson by reading a letter from the principal concerning the erosion problem. Students also explore positive examples of erosion, such as the Nile. The lesson ends with the students submittng the final proposal to the principal of their solution.