<ul><li><b>指读</b></li></ul> <ul><li><b>复述《shadows》</b></li></ul> <p>复述《Mr. Fox's Shop》</p> <p><br></p><ul><li><b>Expermient：Groovy （时髦的）Guitar</b></li></ul><p><b>We need</b></p><p>Two pencils</p><p>elastic bands</p><p>a small box</p><p><br></p><p><b>Steps:</b></p><ol><li>Stretch the elastic bands over the empty box.</li><li>Slide one pencil under the elastic bands on the left side and the other on the right side . This is so that the vibration do not get absorbed into the box.</li><li>Pluck the rubber bands. Listen to the pitch given out.Now move one pencil closer to the other pencil.Pluck again and that you should hear that the pitch of the sound it becomes higher.</li></ol><p><br></p><p>A shorter string also makes the pitch higher.A sound's pitch is how high or low the sound is. The faster an object vibrates,the higher its pitch.</p><p>Guitarists (吉他弹奏者）/gɪˈtɑːrɪst/ can change the length of the strings by pressing down on one of the strings with their fingers.</p><p><br></p><p><br></p><p><br></p> <ul><li><b>Sound Waves Experiment </b></li></ul><p>又做纸杯电话</p><p>This science experiment is fun and easy to do. It is designed to teach us how sound travels from one end to another. With the help of a long string and two plastic cups, we create our working telephone. They will have fun carrying out 执行this activity as learning how sound waves are created and how sound travels through air. </p><p><br></p><p><b>What we need:</b></p><p>Two paper cups</p><p>About 10 feet of string</p><p><b>Steps:</b></p><ol><li>Take two plastic cups and a ball pen.Make a hole at the bottom of each cup with the tip of the ball pen .</li><li>Now pass the other end of the string through the hole from inside the cup.</li><li>Tie knots at the end of the string inside each cup to keep the string ends from coming out.If necessary,You can use a paper clip to to help you.</li><li>One kid will speak into one cup and the other will hold the other cup to his ear. See that the string is straight and tight. Can you hear what the other kid just said？Pull the string tight between the cups. The sound stops if the string is a loose and cannot vibrate.</li></ol><p><br></p><p>Ask Damon to whisper into one cup.</p><p>Put my ear to the other cup and listen .The sound travels through the string a solid object.</p><p>Damon whispered again without using the telephone ,oh I can't hear clearly this time.</p><p>Now It's my turn.I whisper, you listen .</p><p><br></p><p>This is because when we talk into each other into this cup. The bottom of cup vibrates or move back and forth. When any object moves it causes movement in the air. This movement is called sound waves, the vibrations travel though the sting, so you can hear the sound waves and can therefore hear what I said .Talk as much as you like and have fun ,no charges.免费</p> <ul><li><b>Make Music with Water Glasses</b></li></ul><p>In this science experiment, we explore sound and pitch（音高） by turning glasses of water into musical instruments.</p><p><br></p><p><b>You need:</b></p><p>Six large water glasses all the same size</p><p>Measuring cup</p><p>A teaspoon</p><p><br></p><p><b>Steps:</b></p><ol><li>Pour 20ml of water into the first glass ,40ml of water into the second glass . 80ml into the third glass.And so on until all glasses have been used.</li><li>Tap each glass with the teaspoon</li><li>listen to this sound that comes from each class.The more water in the glass , the lower the sound will be .</li><li>Tap on each glass.Go up the scale.Go down the scale. Pretend you are playing a tune on a xylophone.</li></ol><p><br></p><p>Sound waves themselves are invisible, but you can sometimes feel them, and you can see them when they bump into something solid and make it move.The sound waves sound the same when the glasses are empty, but when you add water, it changes the size of the sound waves, because many of the sound waves created have to travel through the water before they can reach your ear. This changes the pitch of the sound you are hearing. <b>The more water, the lower the pitch. The less water, the higher the pitch.</b></p><p><br></p><p><br></p><p><br></p> <ul><li><b>Make a dancing drum</b></li></ul><p><b>We need</b></p><p>scissors</p><p>salt</p><p>balloon</p><p>speaker</p><p>plastic tub</p><p>a device that it can connect to the speakers</p><p><br></p><p><b>Steps:</b></p><ol><li>Using your scissors,cut off the opening section of the balloon and stretch it over the plastic tub to make a drum.</li><li>Sprinkle about a teaspoon of salt over the top of the drum.</li><li>Position a speaker close to your drum .Now play loud music through it and watch how salt dance.</li></ol><p><br></p><p>You should find that the salt <b>jumps about</b> and moves along the surface of your drum.</p><p>The salt moves because the vibration made by the speaker travel through the air and then through the drum,making the skin over the drum shake.This causes the salt on top to bounce.</p> <ul><li><b>网课一节</b></li></ul> <ul><li><b>体操打卡</b></li></ul><p><br></p> <ul><li><b>积木:零食王国</b></li></ul><p>一个喜欢抢劫的零食王国，这脑洞😂</p><p>老母亲已经离线了，被逼拍下视频和照片🤣.</p><p>后面又画了出来。</p> <ul><li><b>画画:怪兽王国</b></li></ul> <p>听完他天马行空的介绍，我来夸他:我说你以后写书，你的书就是那些作者和插画师是同一个人的那种。也太牛了。这小该说以后他会有个图书馆，这样就可以把自己的书借给别人看了。我问他怎么不卖书？他说:他们会抢的呀🤣🤣</p><p>太膨胀了🤣</p> <p><br></p>