Went over worksheet from yesterday.
Handed out Lab Format sheet and State Standards Sheet
Discussed what goes into writing a lab based on alka-seltzer lab. Investigated what factors affect the rate of a chemical reaction.
Students chose factors to test and did the experiment.
Wednesday, September 29, 2010
Thursday, Sept 23, 2010
Astrogeniosity test
When done with test, students did worksheet on Scientific Method based on Textbook
When done with test, students did worksheet on Scientific Method based on Textbook
Wednesday, September 22, 2010
Wednesday, Sept 22, 2010
Because of the bad quiz scores I postponed the test until tomorrow. Today I allowed students to practice using the Quia programs. The students rapidly lost interest even though I tried to impress on them that these questions were similar to those on the tomorrow's test.
In retrospect, I should have required the quia review for homework and NOT postponed the test.
Told students they needed to bring covered textbooks to class tomorrow or have a 30 min detention.
In retrospect, I should have required the quia review for homework and NOT postponed the test.
Told students they needed to bring covered textbooks to class tomorrow or have a 30 min detention.
Tuesday, September 21, 2010
Tuesday, Sept 21, 2010
Handed back Moon Phase Quizzes.
Postponed test to Thursday since results of quizzes were so bad.
Asked for results from homework calculation of ratios of height to base of triangles. Most students did not do it. When I asked why, they said they did not know how to measure with a ruler!!
Did Sun Lab
Went over results of Sun Lab
Discussed number of Earths that go across the diameter of the Sun, number of Earths that span the distance from the Earth to the Sun.
Classified planets as rocky or gas giants. Explained that gas giants can hold onto hydrogen gas because they have more mass (greater gravitational force), and are farther away from the Sun (less heating of the gas).
Showed idea between center of gravity and finding planets around other stars.
Tomorrow, divide students into pairs and do Quia review.
Test on Thursday.
Postponed test to Thursday since results of quizzes were so bad.
Asked for results from homework calculation of ratios of height to base of triangles. Most students did not do it. When I asked why, they said they did not know how to measure with a ruler!!
Did Sun Lab
Went over results of Sun Lab
Discussed number of Earths that go across the diameter of the Sun, number of Earths that span the distance from the Earth to the Sun.
Classified planets as rocky or gas giants. Explained that gas giants can hold onto hydrogen gas because they have more mass (greater gravitational force), and are farther away from the Sun (less heating of the gas).
Showed idea between center of gravity and finding planets around other stars.
Tomorrow, divide students into pairs and do Quia review.
Test on Thursday.
Monday, September 20, 2010
Monday, Sept 20, 2010
Elected student council rep by secret ballot.
Quiz on phases of the moon.
Showed cartoon of Hi and Lois about the Autumn Equinox
The Autumn or Fall Equinox is Wed, Sept 22, 2010
Equi-nox means equal night. At the equinox (first day of fall) we get equal hours of night and day.
At the summer solstice (first day of summer), the sun is highest in the sky. "sol-stice" comes from sun and stationary. As we approach the summer solstice, the sun gets higher and higher in the sky at noon, reaching its most overhead position at the summer solstice (around June 21). After that the Sun goes lower in sky reaching its lowest position at noon in the sky on the winter solstice (first day of winter - about Dec 21).
Went over the order of the seasons showing the position of the Earth at the start of each season - Summer, Fall, Winter, Spring
Discussed causes of the seasons. Seasons are NOT due to how close or far away the Earth is from the Sun. If it were, we would have the same seasons in both the northern and southern hemispheres. On Earth, the seasons are reversed for the two hemispheres. When it is winter in the northern hemisphere, it is summer in the southern hemisphere, etc.
Instead, the seasons are due to the tilt of the Earth's axis. It is tilted about 23.5 degrees from the perpendicular to its orbital plane. Without this tilt, we would not have seasons. Showed how we get 24 hours of sunlight at summer solstice at the north pole and get 24 hours of darkness at the same time at the south pole.
Uranus has the greatest tilt, about 90 degrees, so it has the most extreme seasons.
Did measuring exercise of length and width of table. Students need to measure in centimeters (100 to the meter) to the nearest 0.1 centimeter.
Had students draw similar triangles and measure the ratios of height to base for the two triangles. Did not get a chance to discuss the significance of the ratios. Had students calculate the ratios for homework.
Quiz on phases of the moon.
Showed cartoon of Hi and Lois about the Autumn Equinox
The Autumn or Fall Equinox is Wed, Sept 22, 2010
Equi-nox means equal night. At the equinox (first day of fall) we get equal hours of night and day.
At the summer solstice (first day of summer), the sun is highest in the sky. "sol-stice" comes from sun and stationary. As we approach the summer solstice, the sun gets higher and higher in the sky at noon, reaching its most overhead position at the summer solstice (around June 21). After that the Sun goes lower in sky reaching its lowest position at noon in the sky on the winter solstice (first day of winter - about Dec 21).
Went over the order of the seasons showing the position of the Earth at the start of each season - Summer, Fall, Winter, Spring
Discussed causes of the seasons. Seasons are NOT due to how close or far away the Earth is from the Sun. If it were, we would have the same seasons in both the northern and southern hemispheres. On Earth, the seasons are reversed for the two hemispheres. When it is winter in the northern hemisphere, it is summer in the southern hemisphere, etc.
Instead, the seasons are due to the tilt of the Earth's axis. It is tilted about 23.5 degrees from the perpendicular to its orbital plane. Without this tilt, we would not have seasons. Showed how we get 24 hours of sunlight at summer solstice at the north pole and get 24 hours of darkness at the same time at the south pole.
Uranus has the greatest tilt, about 90 degrees, so it has the most extreme seasons.
Did measuring exercise of length and width of table. Students need to measure in centimeters (100 to the meter) to the nearest 0.1 centimeter.
Had students draw similar triangles and measure the ratios of height to base for the two triangles. Did not get a chance to discuss the significance of the ratios. Had students calculate the ratios for homework.
Friday, Sept 17, 2010
Went over Phases of the Moon Lab using the overhead.
Showed the saying for determining waxing and waning:
If right is bright, then wax to max.
Showed how to determine from Phases of the Moon Lab at what time that phase is most overhead, and when it rises and sets.
Interesting factoids about the moon:
1. The horns of the crescent moon always point away from the Sun
A crescent moon is always close to the Sun in the sky
2. A line drawn connecting the horns of the crescent moon points south.
Showed cartoons of "incorrect" crescent moons in which the time of night indicated by the cartoon does not agree with the time shown by the moon.
Quiz next time on phases of the moon.
Showed the saying for determining waxing and waning:
If right is bright, then wax to max.
Showed how to determine from Phases of the Moon Lab at what time that phase is most overhead, and when it rises and sets.
Interesting factoids about the moon:
1. The horns of the crescent moon always point away from the Sun
A crescent moon is always close to the Sun in the sky
2. A line drawn connecting the horns of the crescent moon points south.
Showed cartoons of "incorrect" crescent moons in which the time of night indicated by the cartoon does not agree with the time shown by the moon.
Quiz next time on phases of the moon.
Thursday, Sept 16, 2010
Quiz 2
Went over Phases of the Moon showing what the Moon looks like during each phase.
Did Phases of the Moon Lab
Went over Phases of the Moon showing what the Moon looks like during each phase.
Did Phases of the Moon Lab
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