(
课件网) Unit 3 Unit 3 Make it happen! A helping hand 能够发现并描述一个日常生活中的问题。 能够介绍一个发明创意，解决此问题。 能够描述发明的工作原理。 fair artificial block n. 展览会 n. 一块 （木头、石头等有直边的硬物） adj. 人造的，人工的 At the science fair, my project used a small block of artificial wood to demonstrate how to build eco-friendly furniture. 在科学展览会上，我的项目用一小块人造木头来演示如何制作环保家具。 condition n. 长期疾病 cost v. 价格为，需支付 lend v. 借给，借出 lend (sb) a hand 帮助（某人）做某事 Because of his heart condition, the new medicine cost him a lot of money, so his friend offered to lend him some cash. 由于他的心脏病，新药花费了他很多钱，所以他的朋友主动借给他一些现金。 3-D adj. 三维的，立体的 printer n. 打印机 invent v. 发明， 创造 Scientists used a 3-D printer to invent a special tool that helps disabled people. 科学家们用3D打印机发明了一种帮助残疾人的特殊工具。 invention n. 发明 weigh v. 重，重量是…… kilogram n. 千克，公斤 fix v. 解决（问题） download v. 下载 The engineer had to weigh the parts to make sure they were under five kilograms, fix the software bug, and download the update to solve the problem. 工程师必须称重这些零件以确保它们低于五公斤，修复软件漏洞，并下载更新来解决问题。 What can you see in the pictures What are they doing What technological inventions do you use every day I often use ... My favorite is … because I can ... Look at the word cloud and predict what the passage is about. Which words are new to you Do these words have any relationship with each other These words relate to invention and problem-solving. Can you use the key words to describe what the passage is about I think the passage is about someone who invented an artificial arm. He or she designed it to improve people’s lives by lending “a helping hand”. Look at the picture and title, and answer: — Where was the boy — He was at/ in a(n)… — What was he doing at that moment — He was… What was in the boy’s hand Read the passage and check your answer. — Where was the boy He was at a science fair. — What was he doing at that moment He was showing his work. — What was in the boy’s hand There was a robotic arm in his hand. An event where students make projects to show science ideas What is the passage mainly about It’s mainly about how Easton has helped people with his invention, an artificial arm. man-made Order the following events in the passage. _____ Easton made a robotic arm with plastic blocks and fishing line. _____ Easton allowed people to use his design for free. _____ Easton and Jenny met at a science fair. _____ Easton made an artificial arm with a 3-D printer. 1 2 3 4 What is 3-D 3-D means “three-dimensional(空间的)”. It describes objects that have three measurements: length, width, and depth. For example, a drawing of a square is flat and has only length and width — that’s 2-D. But a real box has depth, too. You can touch it, turn it, and see it ... ...
