Microscopes - An Introduction
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The document discusses the history of the microscope, beginning with Galileo in the early 1600s who built one of the first microscopes and used it to observe things close up. Robert Hooke in the 1660s was the first to observe and illustrate cells by looking at a piece of cork under his microscope. Antony van Leeuwenhoek in the late 1600s and early 1700s made over 500 microscopes and used them to discover bacteria, blood cells, and single-celled organisms, achieving magnifications of up to 270 times.
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This document discusses inferences and how readers make inferences when reading. It explains that making inferences involves taking clues from the text and combining them with your own background knowledge to picture what is happening beyond just the explicit words. It provides an example of making inferences about the emotions and perspectives of characters in a cartoon based on visual clues and things left unsaid. The document encourages readers to practice making inferences to better understand implicit details and meanings in texts.
Idioms for Fourth Graders
This document discusses idioms, which are expressions that do not literally mean what the words say. It provides examples of common idioms and their meanings, such as "pulling my leg" meaning teasing, "knocked her over with a feather" meaning very surprised, "drop me a line" meaning write me a letter, and "down in the dumps" meaning feeling sad. The document seeks to illustrate idioms and show that their real meanings can be different than the literal meaning of the words through various examples.
Homophones
Homophones are words that sound the same but have different spellings and meanings. Examples provided are band/banned, board/bored, and Sunday/sundae. Homophones can be used in sentences to confuse the reader about which word is being used based on context, such as "the wind blew my board shirt into the pool" or "I ate the bored pancakes that were on my plate." A homophone generator is also included.
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إضغ بين إيديكم من أقوى الملازم التي صممتها
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تتميز هذهِ الملزمة بعِدة مُميزات :
1- مُترجمة ترجمة تُناسب جميع المستويات
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واخيراً هذهِ الملزمة حلالٌ عليكم وإتمنى منكم إن تدعولي بالخير والصحة والعافية فقط
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- 1. A Brief History of the Microscope
- 2. Galileo Approximately how many years ago did he live? 450 1564 –1642
- 3. Galileo •Italian astronomer •“The father of modern astronomy” – discovered Jupiter’s moons, sunspots, planets revolved around the sun •Built a telescope that saw things “up close” ( a microscope)
- 6. Robert Hooke *English physicist *looked at a little piece of cork through his microscope – saw small “cells” (little rooms) *an excellent illustrator wrote a book called Micrographia
- 9. Antony van Leeuwenhoek 1632 –1723
- 10. Antony van Leeuwenhoek •Dutch microscopist •No advanced education •Discovered single-celled animals in pond water •Discovered bacteria and blood cells •Made over 500 microscopes
- 11. Antony van Leeuwenhoek’s microscope A: B: C: D: Screw for adjusting height of object Metal plate serving as the body Skewer to impale the object and rotate it The lens itself; which was spherical * magnification of 270
- 12. 300X magnification *wasp eye *brown algae in pond water *scales on a butterfly wing *pollen on a butterfly tongue