"How to Make It Bigger" Tiny World PPT Courseware 2

Description

"How to Make It Bigger" Tiny World PPT Courseware 2

teaching objectives

1. The combination of two convex lenses can make the image of an object larger;

2. The invention of the microscope has broadened the field of observation. The microscope is an important observation tool for humans to understand the tiny world;

3. Understand the story of Leeuwenhoek.

4. Master the correct steps for using a microscope

Make a simple microscope

1. Compare the effect between a single convex lens and two convex lenses with adjusted focal length---a homemade simple microscope.

2. How does a microscope significantly improve its ability to magnify objects?

——Because "one convex lens in the microscope further magnifies the image formed by the other convex lens."

3. Use a homemade simple microscope to observe surrounding objects. What new discoveries can you make compared with a magnifying glass?

The story of Dutch biologist Leeuwenhoek

Make a simple microscope

Find two convex lenses with different magnifications and adjust the distance between them to observe the object until you can see it most clearly.

Then remove a convex lens and compare the differences in the objects seen twice.

Repeat it several times and see what you find?

Move up and down to adjust the distance between the two convex lenses until you find the clearest image of the object. Use a plastic tube to fix the two lenses, and a simple microscope is ready. Try it and see if the image of the object is enlarged.

tips

In the 17th century, it was discovered that combining two convex lenses significantly improved magnification capabilities. This is because one convex lens further magnifies the image formed by the other convex lens. This is the early microscope. The microscope is an amazing invention that has broadened human vision a lot.

Use a homemade microscope to observe surrounding objects. Compared with a magnifying glass, does the magnification of the image of the object increase?

Have we discovered something new? Write down our findings.

Keywords: Tiny World teaching courseware, How to make it bigger teaching courseware, Educational Science Edition science PPT courseware download for the second volume of sixth grade, Sixth grade science slide courseware download, Tiny World PPT courseware download, How to make it bigger PPT courseware download, .PPT format;

For more information about the PPT courseware "How to Make the Tiny World Bigger", please click on the Tiny World PPT How to Make It Bigger PPT tag.

"How to Make It Bigger" Tiny World PPT teaching courseware:

"How to Make It Bigger" Micro World PPT Teaching Courseware Part One: Collaborative Exploration Discussion: The magnification power of a convex lens is limited, how can we make objects bigger? Exploration and research: Use two hands in tandem, or one up and one down to hold two...

"How to Make It Bigger" Tiny World PPT download:

"How to Make It Bigger" Tiny World PPT download Part 1: Questions before class 1. What is a crystal? 2. What are the two common methods of making crystals? 3. List several common crystals. 4. List several common amorphous crystals. 5. Crystals in nature...

"How to Make It Bigger" Tiny World PPT:

"How to Make It Bigger" Tiny World PPT Part One: Make a Simple Microscope The magnification power of a convex lens is limited and can only magnify up to about 25 times. How can we make objects bigger? Find two convex lenses with different magnifications and adjust...

File Info

Update Time: 2024-11-22

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

Preview