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1. What inventions have man made out of nature? 2. Bionics 3, ˂a href='# 4th Grade First volume of language "The Secret of the Night Flight" lesson plan 'title=' 4th Grade first...

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What inventions have man made out of nature?

Scientists have created the world's first gas masks based on the uncanny ability of a wild boar's nose to detect poison. According to the principle of frog eye vision, people haveAn electronic frog eye has been developed. The electronic frog eye can identify objects of certain shapes with the same accuracy as the real frog eye. People were inspired by sawgrass and invented saws to improve efficiency.

Inspired by flies, scientists have invented a unique small gas analyzer that has been installed in the cabin of a spacecraft to monitor the composition of the gas inside. Mimicking the principle of firefly light, humans have created artificial cold light technology. The bioelectric power of electric fish inspired the invention of the volt battery.

Inspired by the flying of birds, man invented the airplane. Ship sumThe submarine design principle comes from people's imitation of fish and dolphins. Scientists have created the world's first gas masks based on a wild boar's unique ability to detect poison through its nose. Rocket liftoff is achieved by the recoil principle of jellyfish and cuttlefish. Scientists studied the eyes of frogs, which led to the invention of electronic frog eyes.

Nature is a wonderful and creative world with a wide variety of inventions, and here are some of the important ones: Photosynthesis Photosynthesis is the process by which plants convert water and carbon dioxide into oxygen and energy through sunlight. This is one of the most important inventions in nature, not only for life on EarthA very strange little gas analyzer. The instrument has been installed in the cabin of the spacecraft to detect the composition of the gases inside. This small gas analyzer can also measure harmful gases in submarines and mines.

2, bat and radar principle: bat "echolocation". Bat power: The ultrasonic waves emitted by bats can be immediately reflected back when they meet the flying insects, and at this time, the bats know that there is food around. Bionic application: The radar invented by the bat can detect the position and distance of the enemy aircraft in time, so as to issue an alarm and then snipe. Fly and camera principle: fly recoveryEyes.

3, by the annoying fly, a very strange small gas analyzer has been installed in the cabin of the spacecraft to detect the composition of the cabin gas. From fireflies to artificial cold light. Electric fish with Volt batteries. The windward ear of jellyfish is modeled on the structure and function of jellyfish ear, and the storm forecaster of jellyfish ear is designed. It can forecast the storm 15 hours in advance, which is of great significance to navigation and fishery safety.

4, human bionics inventions are: Human imitated the bat invented radar. Humans have improved the problem of wing flutter by imitating dragonflies. Human modelThe streamline body, which mimics the whale, increases the speed of the ship. Humans have imitated the thin shell structure of an egg and designed: the Great Hall of the People, the Beijing Railway Station? Humans have imitated the jumping of kangaroos to create jumping off-road cars. Man imitated the wings of a bird and made an airplane.

'The Secret of the Night Flight'

The first volume of the fourth grade Chinese "The Secret of Night Flight" teaching plan 1 [teaching objective] can recognize 11 new words, read the polyphonic "system" accurately, can write 14 new words, can write "radar."Mosquito" and other 12 words. Learn to ask questions from different angles. [Important and difficult points in teaching] Learn to ask questions from different angles. Able to understand text content with the help of questions.

Students discuss and summarize the secrets of bat night flight and how radar works. In-depth Exploration (10 minutes) Students work in groups to ask questions about bats and radar from different perspectives. Students share the results of discussion, answer questions to each other, and deepen their understanding of the content of the text. Summary and Development (5 minutes) Students summarize what they have learned in this lesson to deepen their understanding of the connection between night flight and bat pathfinding.

"The Secret of Night Flight" is the text of Lesson 26, Unit 6 of the second volume of the third grade Chinese of Shanghai Education Edition Primary School. This text mainly tells that scientists have uncovered the reasons why bats can fly at night through repeated trials, and have been inspired to install radar on the plane to solve the problem of safe flight of the plane at night. Teaching plan: Can recognize 11 new words, read polyphonic "system", can write 14 new words, can write 12 words such as "radar, mosquito".

Knowing how bats fly at night, have you guessed the secret of airplane flight at night? Modern airplanes are fitted with radars, and radar works with batsThe road is similar. Radar sends out radio waves through the antenna, and the radio waves are reflected back when they meet obstacles, which are received by the radar and displayed on the fluorescent screen.

The secret of night flight is the fourth grade Chinese volume of lesson 6, in this class tells the story of nature is the eternal source of human wisdom, and animals, are the best teachers of human beings, then how to take notes on the secret of night flight? Learn from different angles. Use questions to understand the text. Understand the word "bat" and other new words, read the polyphonic word "system" correctly.

Man use bionicsWhat was invented

Invention of the vibrating gyroscope based on the fly's balance rod. A fly's antennae are like a sensitive gas analyzer. Bionics have been inspired by this, based on the structure and function of the fly's olfactory organs, imitation into a very strange small gas analyzer. The instrument has been installed in the cabin of the spacecraft to detect the composition of the gases inside. This small gas analyzer can also measure harmful gases in submarines and mines.

Human bionics inventions include: man imitated bats and invented radar. Humans have improved the problem of wing flutter by imitating dragonflies. HumansMimicking the streamline body of a whale increases the speed of a ship. Humans have imitated the thin shell structure of an egg and designed: the Great Hall of the People, the Beijing Railway Station? Humans have imitated the jumping of kangaroos to create jumping off-road cars. Man imitated the wings of a bird and made an airplane. According to the principle of the bat ultrasonic locator, people have also copied the "pathfinder" used by the blind. This pathfinder is equipped with an ultrasonic transmitter, and the blind can find poles, steps, and people on the bridge with it. Now, "ultrasonic glasses" with similar effects have also been made. Mimicking the incomplete photosynthetic apparatus of cyanobacteria, biomimetic photodissociation of water will be designedThe device can obtain a large amount of hydrogen.