<p class="ql-block">本单元看似很简单，小动物的叫声。但是更深层次的是探索声音如何产生的，以及我们为什么能听到声音（声音需要通过什么介质传播），整合了生物科学。我们透过声音这个现象来认识其本质，通过有趣的小实验来达成目标。科一the sound around us帮了大忙。</p><p class="ql-block">I Can Hear</p><p class="ql-block">Little crow, little crow, caw, caw, caw.</p><p class="ql-block">I can hear the little crow, caw, caw, caw.</p><p class="ql-block">(owl, hoo) (donkey, heehaw)</p><p class="ql-block">有关动物叫声的主题，拓展到听觉类应有与游戏。</p> <p class="ql-block">图片Game: Who is singing</p><p class="ql-block"><br></p><p class="ql-block">I prepared some animal’s sound cards in advance and I hided these cards in our house. Now let me cover your eyes ,I will imitate the animals’ sound in our room ,it will be the clues to help you find these cards. There are some new animals in our home. Close your eyes and count out loud from one to twenty. Then you will hear the sound of an animal. Try to find it.</p><p class="ql-block"><br></p><p class="ql-block">用 I can hear旋律替换歌词</p> <p class="ql-block">图片Read lips</p><p class="ql-block">We make shapes with our mouth. The other guess what she is saying.</p><p class="ql-block">Players try to guess words and phrases by observing the lip movements of other players.</p><p class="ql-block">The lipper can not make any sound or gesture.</p><p class="ql-block">玩了唇语游戏，简单的指令，中英文都很有意思。</p> <p class="ql-block">whisper game</p><p class="ql-block"> everyone pls stand in a line, let's play a whisper game. I will be the first one whisper ing words or sentence to the second.the second person whispers to the third. and so on. then the last person speaks out the sentence they heard. see if the sentence has changed with the first person.</p> <p class="ql-block">图片Clapping game</p><p class="ql-block">The game determines the person’s position through the sound of a clap. You wear a mask , I will choose a place to stand still without moving. You ask me to clap hands , you listen to where the sound has come from and find where I am. You can only ask for clapping twice.</p> <p class="ql-block">animal spinner</p><p class="ql-block">ask the kids to sit in a circle, and hand everyone a card. first review the animals and their sounds. then let's start the game. I put a bottle of water in the middle. I turn the bottle to decide who will cry. when the bottle stops turn ing and the spout points to sb, who should make the animal sound on the card. let's take turns to spin the bottle.</p><p class="ql-block"><br></p> <p class="ql-block">Did you hear something? Maybe the sound you heard was as quiet as your cat licking her paws. Or maybe it was loud, like a siren going by. Sounds are everywhere, and you have two cool parts on your body that let you hear them : your ears.</p><p class="ql-block"><span style="color:rgb(57, 181, 74);">Your ears are in charge of collecting sounds, processing them, and sending sound signals to your brain. Your ears also help you keep your balance</span>. So if you bend over to pick up your cat, you will fall down — or even worse — fall on your cat. Meow!</p> <p class="ql-block">The ear is made up of three different sections: the outer ear, the middle ear, and the inner ear. These parts all work together so you can hear and process sounds.</p> <p class="ql-block">耳朵兄弟：讲中文故事</p><p class="ql-block">耳朵的构造</p><p class="ql-block">你好啊！我是一只耳朵。耳朵最重要的用处就是听声音，现在，你就是用耳朵在听我说话呢。你知道耳朵是怎么听到声音的吗？耳朵包括三个部分：外耳、中耳和内耳，顾名思义，就是指整个耳朵的外面、中间和里边。外耳是耳朵能从人体外部看见的部分。从自然环境中传来的声音，会通过外耳得到收集，传入到外耳道。中耳由鼓膜、中耳腔和听骨链组成。鼓膜振动，可以把声音进行转换，再通过耳骨等组织继续传递。声音最终传入到内耳，振动内耳的听小骨，引起耳蜗内液体的晃动，再引起耳蜗内毛细胞移动，而产生信号。信号最终会通过听神经，报告给大脑。这样，人的耳朵才听到了声音。没想到吧？平时你听到的声音，其实经历了这么复杂的过程。</p><p class="ql-block">当然了，耳朵还有很多其他的作用。比如耳廓和外耳道可以防止外来物体的进入，保护外耳道和鼓膜的安全，保持耳朵的清洁。</p><p class="ql-block">不知道你有没有注意到，当自己说话的声音用录音设备录下来，再播放的时候，你听到的声音，似乎和听自己平时说话的声音不太一样。你知道这是为什么吗？</p><p class="ql-block">想一想，听录音设备播放自己的声音时，声音仅仅通过“空气传播”一条通道传播；而平时自己说话或者唱歌时，声音是通过两条通道——“空气传导”和“颅骨传导”也就是自己身体传导的混合，同时传播的。所以啊，当你通过录音听自己的声音时，就会感觉不一样了。也就是说，你说话的声音，并不是像你自己听到的那样，而是——像别人听到的那样。你想知道自己的声音好听吗？看来不能光自己听，还要问问别人咯。</p> <p class="ql-block">Exploring the sound</p><p class="ql-block">Human and animals use sound to recognize and communicate with each other. <span style="color:rgb(237, 35, 8);">Besides sound, there are other ways to communicate such as body lauguage and sign language.</span></p><p class="ql-block">All sound is caused by the <span style="color:rgb(237, 35, 8);">vibration</span>.</p><p class="ql-block">Touch your throat to feel the vibration. When you shout out loud, You can feel the vibration of your throat.</p><p class="ql-block">第一次发现原来声音是从喉咙里面的声带（vocal cords）发出来的，不敢相信，还以为是嘴巴发出来的。我问她说话需不需要energy.她说不用。哈哈中招了，声音是能量的一种形式，说话肯定需要力气的哈！</p> <p class="ql-block">Experiment ：Sound Waves Experiment</p><p class="ql-block">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 paper cups, we create our working telephone. They will have fun carrying out this activity as learning<span style="color:rgb(237, 35, 8);"> how sound waves are created and how sound travels through air.</span></p><p class="ql-block"><span style="color:rgb(237, 35, 8);">娃第一次听说声波，让她去画画成了三角形，我说声波跟海浪有一点像层层递进进行传播。</span></p> <p class="ql-block">This is because when we talk into each other into this cup. The bottom of cup <span style="color:rgb(255, 138, 0);">vibrates</span> or move back and forth. When any object moves it causes movement in the air. <span style="color:rgb(255, 138, 0);">This movement is called sound waves, </span>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.</p> <p class="ql-block">Experiment </p><p class="ql-block"><span style="color:rgb(237, 35, 8);">Sound And Volume Vibrations</span> Science Experiment </p><p class="ql-block">This science experiment is a great way to help you understand sound and volume vibrations. Have fun experimenting with different noises and music to see how the tissue paper bounces. </p><p class="ql-block">Materials:</p><p class="ql-block">speaker蓝牙音箱</p><p class="ql-block"> bowl</p><p class="ql-block">Plastic wrap保鲜膜</p><p class="ql-block">Rubber Band</p><p class="ql-block">Pieces of Tissue Paper</p><p class="ql-block">This is also a very loud experiment, Use your ear protection耳罩 because of your sensitivity to sound. You can keep this set of ear protective ear muffs on hand for various</p><p class="ql-block">Directions:</p><p class="ql-block">1. Place a piece of plastic wrap on the top of a bowl and straighten as best as possible. Wrap a rubber band around the plastic wrap to hold it in place. </p><p class="ql-block">2. Crumble up a few small pieces of tissue paper and set them onto the plastic wrap. we just put the tissue balls on there randomly.</p><p class="ql-block">3. Place the bowl next to a speaker and play music or put the speaker into the bowl. Is the paper moving?</p><p class="ql-block"><span style="color:rgb(237, 35, 8);">Turn up the volume</span>: Now what happens?</p><p class="ql-block"><span style="color:rgb(237, 35, 8);">Try another type of music: What level of volume makes the tissue paper move?</span></p><p class="ql-block"><span style="color:rgb(237, 35, 8);">Sound vibrates air</span>. The sound from the speakers makes the air vibrate which makes the plastic wrap on the bowl vibrate. This makes the light pieces of tissue paper <span style="color:rgb(237, 35, 8);">bounce</span> around.</p> <p class="ql-block">shiny do you know if we were on the moon and talked to each other, can we hear each other? no. so do u know why?</p><p class="ql-block">because there is no air on the moon, so the sound can't travel to our ears. let's do an experiment tocheck this. now you hold this plastic bag with a speaker to your mouth and try to suck up all the air in the bag, guess what will happen? maybe we can't hear the music played by the speaker. unfortunately, the experiment failed. </p> <p class="ql-block">Experiment ：Make Music with Water Glasses</p><p class="ql-block">In this science experiment, we explore<span style="color:rgb(237, 35, 8);"> sound and pitch</span>（音高） </p><p class="ql-block">by turning glasses of water into musical instruments.</p><p class="ql-block"><span style="color:rgb(237, 35, 8);">Sound waves themselves are invisible</span>, 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. <span style="color:rgb(237, 35, 8);">The more water, the lower the pitch. The less water, the higher the pitch.</span></p><p class="ql-block"><span style="color:rgb(237, 35, 8);">引导孩子自己得出实验结论，或者问她选择题。</span></p> <p class="ql-block">聊聊天，如果碰到不想讲佩佩猪时播放给她看一下</p> <p class="ql-block">hand crafts</p><p class="ql-block">let's make a microphone</p><p class="ql-block">we will need: a paper tube</p><p class="ql-block">a pair of scissors</p><p class="ql-block">some pieces of yellow paper</p><p class="ql-block">pipe cleaners</p><p class="ql-block">double sided tape</p><p class="ql-block"><br></p><p class="ql-block">procedures: 1 cut the paper into the shape of a microphon</p><p class="ql-block">2. stick the paper onto the paper tubes.</p><p class="ql-block">3. use the pipe cleaners to decorate it.</p> <p class="ql-block">科一后面的实验</p>