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Friday, October 15, 2010

October 15, 2010 Day Twenty-Nine


5 x 5 for 5th Grade
5 Vocabulary
1. Eclipse: When the moon passes between the sun and the earth, also called a solar eclipse. But the lunar eclipse is when the Earth passes between the sun and the moon.
2. Ellipse: A closed symmetric curve shaped like an oval.
3. Lunar: Of or pertaining to the moon.
4. Gravity: The force of attraction that holds human beings to the ground and planets to their orbit.
5. Solar: Of or pertaining to the sun.

5 Details/Facts
1. Three things that Earth does: Orbits around the sun slowly, turns in axis, and holds the moon in place.
2. The Sun never moves; it always stays in the center of our solar system.
3. There are 10 different explorers that I don't know of yet.
4. Dad will be coming home in 2 days!
5. All planets were probably once asteroids.

5 Sentences
1. I've never seen an eclipse, but I can't wait to because I think it would be cool.
2. There is an ellipse at the top of a cylinder.
3. The word lunar comes from Latin, but in Bear in the Big Blue House, the moon is called Luna, which is Spanish for moon.
4. There is no gravity in space, so when you're an astronaut you float.
5. Some people have solar panels on the roofs of their houses so they get light power from the sun.

5 Questions & Answers
1. What is sad about Ferdinand Magellan? A: He never found what he was looking for, but he tried so many times.
2. What is the scientific word for weight? A: mass.
3. What is another way to remember the new way of long-division called "Double Division?" Hint: It's part of the first step. A: 1-2-4-8
4. Which "Spice Route" explorer you learned about today helped inspire the Age of Discovery and specifically Christopher Columbus? A: Marco Polo.
5. Why don't the planets run into each other? A: because they have a gravitational pull that keeps them in line.
Science Experiment--Orbit Dance

Activities:Science Experiment: Orbit Dance *We did do this today with our guest Courtney but we weren't as successful as I'd hoped due to rain and winds, therefore we attempted the experiment in the garage and just didn't have the room to accomplish the goal. But we got the point across and it was fun and we're going to try it again when it's dry outside.*
Materials Needed:
2 hula-hoops (small and large if possible)
2 jump ropes or equivalent
1 broom stick or equivalent
Chalk
1 "Sun" volunteer
1 "Moon" volunteer
1 "Earth" volunteer

Position the "Sun" in the center with the larger hula-hoop around Sun.
Tie one end of rope to hula-hoop.
Earth holds other end of Sun's rope, representing GRAVITY's pull.

Explain: "Because of the relationship of mass between the Sun and Earth that pull stays constant. The Earth is stuck to its orbit without change or falter because of that complicated but set relationship. Without the relationship of mass between the Sun and Earth, gravity would not hold Earth to its orbit and it would be free to fly through space without course."
Tie Earth's rope end to smaller hula-hoop and stand Earth in middle of hoop.
Tie one end of second rope to opposite side of Sun's rope on Earth's hoop so that Earth and Sun are connected and Moon and Earth are connected.
O -------- O ------- Moon
                SUN     rope    EARTH    rope

Moon takes other end of Earth's rope.
Earth takes broom stick and holds it standing end-to-end vertically as Earth's AXIS.

Explain: "The Earth and Sun and Moon are usually balanced. Who knows what the Earth's speed around its Axis is? 24 hours or a SOLAR DAY. Earth move around your Axis. Stop. The side facing the Sun is your Eastern Hemisphere. What time of day is it in Singapore? Daytime. How about in Maine, which faces the moon? Nighttime. Now what else do we know about the Earth on its Axis? That it's not really straight up and down, it's tilted. Earth tilt on your Axis. What do you notice about Maine now? It's titled away from the sun. What does that tell you about what season Maine is in? How about Australia? What season are they in? Summer. Because they are titled closer to the Sun now."

"What do we know about the Moon? How fast does it go around the Earth? About a month or specifically 27.3 lunar days and 29 solar days or calendar days. What happens to the Moon as it orbits the Earth? It has phases from New to Full depending on its relation to the Sun."
"What else is the Earth doing as it spins on its Axis and the Moon orbits it? The Earth orbits the Sun. How fast does the Earth orbit the Sun? 365 solar days or one year. And as it is spinning on its Axis and orbiting the Earth and having the Moon orbit it (and control the tides), the tilt of the Earth changes as it moves along its elliptical, counter-clockwise orbit! The Earth has a lot to do!"

Before beginning the "orbit dance," have Earth orbit Sun on its own and draw the orbit in chalk. Detach the rope connecting Sun and Earth. (we don't want to get all tangled up!)

Leave the rope connecting Moon and Earth as example and reminder of Gravity.

Count out a steady count of 8. It may help to clap. Help students find the rhythm.
Sun's job is to stand steady and keep the rhythm!
Have the Earth practice spinning on its Axis.
Have the Moon practice orbiting the Earth. Remind each of the speed they are moving in relation to each other.
Now comes the tricky part. Earth then needs to start its orbit around Sun.

Orbit "times" in counts of 8—careful choreography!
Earth + Axis = 24 hours or 1 "solar day"—in "time"—1 and 2 and 1 and 2 and 1 and 2 and 1 and 2
Moon + Earth = 27.3 days or 1 month—in "time"—1 and 2 and 3 and 4 and 1 and 2 and 3 and 4
Earth + Sun = 365 solar days or 1 year—in "time"—1 and 2 and 3 and 4 and 5 and 6 and 7 and 8

This takes some time, patience, practice and room. Even if you can't get the dance to work perfectly, it's a great lesson for students to learn and appreciate the careful choreography the planets and stars in our galaxy orchestrate!

Web Quest: Explorers You Should Know (Part One)

  1. A: Marco Polo (1254-1324), is probably the most famous Westerner traveled on the Silk Road. He excelled all the other travelers in his determination, his writing, and his influence. His journey through Asia lasted 24 years. He reached further than any of his predecessors, beyond Mongolia to China. He became a confidant of Kublai Khan (1214-1294). He traveled the whole of China and returned to tell the tale, which became the greatest travelogue.

    B: Read and find 3 facts/details about Marco Polo
    1. Marco Polo had 2 brothers named Matteo and Niccolo.
    2. The ruler of China was Kublai Khan.
    3. The polo brothers carried a golden tablet called paiza in Chinese, it kept them from being killed in the great khan's kingdom.

  2. A: Read
    B: List two reasons Henry the Navigator is important to the Age of Exploration
    1. He was t he first person to open, and run a navigating school.
    2. He was responsible for exploration down the coast of Western Africa that had never been done before.
    C: Find Image of Henry the Navigator, "Save As," and Copy & Paste here:


    1. A: What did Dias call the Cape of Good Hope and what does it mean?
      Answer: Cabo Tormentoso---stormy cape.
      B: Which explorer completed Dias' voyage around the Cape to India ten years later?
      Answer: Vasco de Gama
    2. Vasco de Gama: http://www.enchantedlearning.com/explorers/page/d/dagama.shtml
    A: Read
    B: Write one sentence about Vasco de Gama.
    1. Vasco De Gama made 3 trips to India, and was famous for making the Portugese more powerful in India.
    C: Copy & Paste the map of de Gama's voyage here:
  1. Ferdinand Magellan: http://www.youtube.com/watch?v=pM-igYjn6E4 
A: Watch the video.
B: Watch it again. It's funny.
C: What is sad about Magellan?
Answer: He tried so many times but he never made it to the east indies.
New Math: Double Division or "1-2-4-8"


http://www.doubledivision.org/#below
I found this new way of teaching and working out long division problems. This is a 6th grade teacher who posted this technique in 2005. Sophie and I worked out this new way together today and it was fun! I encourage you to try it! As Sophie pointed out in her blog today, there are more steps but they make sense and it's easier than the classical way of solving long division problems.

Sophie's Blog: Who came to visit today and help with school? What was neat about the science experiment today? What was your favorite part about the first half of Explorers You Should Know web-quest? Do you like the new way to work out long division problems?
Caca came to visit today and did the Explorers you don't know web quest with me. The neat part about the experiment that we did today I think, that is was like a dance. I liked watching the hilarious Ferdinand Magellan video on YouTube. I think the new way of long division is longer and many more steps than the regular division, but it's simpler, and more fun.

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