Collected Sun Labs (not many people handed it in)
Went over method of similar triangles. Showed how you could use it to find the height of a tree from the length of its shadow.
Students divided themselves into groups of 3 and made pictures of Sun, Moon, Earth.
One group demonstrated positions of Sun, Moon, and Earth for solar and lunar eclipses.
Went outside and students demonstrated solar and lunar eclipses.
Showed short video on lunar and solar eclipses.
Demonstrated with hula hoop showing inclination of Moon's orbit why you get two eclipse seasons each year.
Reviewed vocabulary. Next time quiz on diameter, radius, circumference, solar and lunar eclipses.
Wednesday, September 17, 2008
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