As a post-lesson that reinforces identification of angles, estimation of the degree of an angle, and measuring angles, complete the following on-line lesson:
Measuring Angles with The Leaning Tower of Pisa - Gr. 4-6 - Geometry - Ontario Curriculum (14:40 mins)
Created by Ryan Tindale
In this video, google earth is used to help teach a geometry lesson to grade 5/6 students to identify acute, right and obtuse angles and begin measuring them with a protractor. The bell tower in Pisa is used to make the video more authentic and relevant, with cross curricular links to social studies. Construction on the bell tower in Pisa began in 1173 (Medieval Times) and took 200 years to complete. It's purpose was to let the citizens know that the church (near the tower) was beginning. The bell tower is 150 feet high and has been slowing falling to one side over the last 950 years (therefore, it is known as the Leaning Tower of Pisa). With its cross curricular connection, this video links very well to our Social Studies unit on early societies.
The objective of the video is to use angles to measure how many degrees this building has fallen over using smart technology (lines and protractor). You are to name the angle, estimate the degree of the angle, then help to participate in measuring the degrees of the angle using smart technology. After the video, you are to identify, estimate and measure other building angles
NOTE: Ryan Tindale is a teacher in Ontario who loves to teach math through smart technology. He has created a few videos in his series, Teaching Smarter. His website is a great resource!
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