<p class="ql-block">📌 2a U12 Twinkle, twinkle, little star</p><p class="ql-block">big dipper，moon拓展</p><p class="ql-block"><br></p><p class="ql-block">👂 Listening</p><p class="ql-block">2a</p><p class="ql-block">2b</p><p class="ql-block">peppa pig</p><p class="ql-block"><br></p><p class="ql-block"><br></p><p class="ql-block">📚 Reading</p><p class="ql-block">1.海尼曼-4本</p><p class="ql-block">2. 牛津树-4本</p><p class="ql-block">科一科二- big dipper, moon, moon and sun</p><p class="ql-block">📺 Video</p><p class="ql-block">2a unit 11</p><p class="ql-block">2a unit 12</p> <p class="ql-block"><b>1. Big Dipper</b></p><p class="ql-block"><b></b>We can see the big dipper almost every night if the sky is clear.</p><p class="ql-block"><br></p> <p class="ql-block"><b>What is the Big Dipper?</b></p><p class="ql-block">The Big Dipper consists of seven bright stars, three of which are known as "the handle" of the Dipper and the other four as "the bowl" or "the body."</p><p class="ql-block">/The Big Dipper is formed out of seven bright stars. </p><p class="ql-block">You can make a Big Dipper by following the letters.</p> <p class="ql-block"><b>How Do you Find the Big Dipper?</b></p><p class="ql-block"><b>compass</b></p><p class="ql-block">We can use a compass to help us find the Dipper. a compass points to the North. I hold a compass in my hand. Then I look the direction that the compass needle points.</p> <p class="ql-block"><b>Big Dipper's position</b></p><p class="ql-block">Since the asterism is continually rotating around the North Star, you will see it in different positions throughout the year. During autumn and winter, the Big Dipper will set closer to the horizon, while in spring and summer, it will be higher in the sky, and it will also appear upside-down. The rule is simple and easy to remember: fall down and spring up.</p> <p class="ql-block"><b>Big Dipper, Pointer stars, North Star and Little Dipper</b></p><p class="ql-block">What we need</p><p class="ql-block">pipe cleaners</p><p class="ql-block">pompoms</p><p class="ql-block">glue</p><p class="ql-block">use the flashcard to help guide us in where to bend and how to shape the pipe cleaner. bend and twist the pipe cleaner to create the dipper part the correct way.</p><p class="ql-block">Glue the pompoms on the pipe cleaner as the Big Dipper stars. </p> <p class="ql-block">The two stars at the end of the bowl are called the pointer stars. They point to the North star.</p><p class="ql-block">North Star is a very important star because sailors and other travellers use it to help them find their way.</p><p class="ql-block">There is also a Little Dipper. The North Star is the first star in the handle of the Little Dipper. The Little Dipper has seven stars too. Whenever I see the Big Dipper, I can find the Little Dipper.</p> <p class="ql-block"><b>2. Moon</b></p><p class="ql-block"><b>different parts</b></p><p class="ql-block">Get a large storage box.</p><p class="ql-block">Put some large egg cartons, some bumpy-side up and some the right way up inside.</p><p class="ql-block">Tip in the moon dust, making sure it covered all the surface.</p><p class="ql-block">This part is covered with hills. And this part is covered with craters. the flat part is smoother. They are like wide field or sea. But there is no water in it.</p> <p class="ql-block"><b>craters on the moon</b></p><p class="ql-block">drop the balls onto the moon surface.</p><p class="ql-block">Observe the “craters” left by the balls.</p><p class="ql-block">We also talked about how the moon is more susceptible to craters from space rocks than Earth. Earth’s atmosphere will burn most meteorites and asteroids before they come in contact with Earth’s surface. The moon, however, does not have an atmosphere to protect it!</p><p class="ql-block">the larger the object, the greater the amount of moon dust that explodes into the air, thus the larger the crater.</p> <p class="ql-block"><b>Astronaut</b></p><p class="ql-block">Astronaut takes the space shuttle to the moon. They can walk on the moon. They like to work on the smoother, but they will keep away from the hills and deep craters.</p><p class="ql-block">Astronauts find no water or living things on the moon.</p> <p class="ql-block"><b>Gravity on the moon</b></p><p class="ql-block">Astronauts like walking on the moon. They don't weigh much because gravity on the moon is low. Astronauts can take giant steps. They can bounce up and down.</p><p class="ql-block">But if they fall, it is hard for them to get up because of the moon dust. </p> <p class="ql-block"><b>Moon buggy</b></p><p class="ql-block">Astronaut travels on the moon in a moon buggy. </p><p class="ql-block">The moon buggies have to have wide tires to keep from sinking into it.</p><p class="ql-block">Look! The buggy leaves tire treads on the moon’s surface. </p> <p class="ql-block"><b>Go back to earth</b></p><p class="ql-block">When we go back to the earth, we can leave something on the moon. Maybe we can leave the moon buggies and footprint.</p><p class="ql-block">S: Even golf balls!</p><p class="ql-block">Yes! You can leave your golf balls on the moon.</p><p class="ql-block">Before you go back to the earth, please collect rocks and dust samples to send back for further examination. </p> <p class="ql-block"><b>3. Moon Phases Demonstration</b></p><p class="ql-block">P: Look baby, the moon rises. What shape is it?</p><p class="ql-block">K: It’s round.</p><p class="ql-block">P: Yes, you’re right. It's said that the moon is the brightest and roundest on this day. It means family reunion. But have you ever seen other shapes of the moon?</p><p class="ql-block">K: Yes.</p><p class="ql-block">P: Correct. The moon looks different at different times throughout the month. Sometimes the moon looks like a banana, and other times it looks like half of a circle, and other times it looks like a big round ball.</p> <p class="ql-block"><b>Experiment 1</b></p><p class="ql-block">Today I’ll show you how this happens.</p><p class="ql-block">What we need in this model is: the table lamp, which represents the Sun, the white foam ball representing the moon, your head representing the earth, a pencil and a dark room (the darker, the better).</p><p class="ql-block">1. Now, come inside the room. I’ll turn off the light, and turn on the lamp. look at me. I hold this ball and turn around. /What can you see? /What’s the difference between this side and the other side? Yes, you’re right. This half ball is bright, and the other half is dark.</p><p class="ql-block">2. In this position, I can't see any of the bright side of the moon. Can you see it? No? You’re right. We call this a new moon.</p><p class="ql-block">3.Then I make the ball (moon) orbit to my left. What can you see now? Can you see the tiny lighted side, just like a sickle (镰刀) or banana? We call that a crescent moon.</p><p class="ql-block">4.As the ball (moon) keeps moving, we can see more and more of that lighted side. In this position, we can see half of the lighted side. We call it a quarter moon. As it is our first time to see it, it’s called a first quarter moon.</p><p class="ql-block">5.As we keep moving, we see almost the whole lighted side. We call it a gibbous moon.</p><p class="ql-block">6.Then we can see the entire light at half of the moon, that’s a full moon.</p><p class="ql-block">7. As the moon continues to orbit, we begin to see less and less of that lighted side. We're back to a gibbous moon at this position. But this time the light is on the opposite side, then another quarter moon, last quarter moon (another crescent), and finally back to new moon and the cycle begins again.</p><p class="ql-block">P: Is it interesting? Do you want to hold the ball and turn around by yourself? Have a try, please. Fantastic! Let’s turn on the room light, turn off the lamp and get out.</p><p class="ql-block">P: From this activity, do you know if the moon makes light?</p><p class="ql-block">K: No.</p><p class="ql-block">P: Yes, how clever you are! The moon makes no light. It gets light from the sun, just like the earth. It reflects sunlight towards the earth. Do you want to show everyone what you have seen just now? Now let’s go on the next interesting activity.</p> <p class="ql-block"><b>Experiment 2</b> </p><p class="ql-block">Now let's draw the moon phases on paper. </p> <p class="ql-block"><b>Experiment 3</b></p><p class="ql-block">open the cookies by taking off the tops.</p><p class="ql-block">Use the knife to scrape the filling off in order to form the different phases of the moon. </p><p class="ql-block">Let's use the phases of the moon cards as models for making moons.</p><p class="ql-block">place the Oreo moons on a piece of paper to form the moon cycle. </p><p class="ql-block">The final product was almost good enough to eat. </p>