Requesting a mathematics diary from the first volume of sixth grade

Mathematics Diary Mathematics is everywhere in life. Even when we go shopping in the supermarket or buy food at the market, various interesting mathematics-related stories will happen. Mathematics diary, to put it simply, is to record some mathematical problems and stories that you encounter in your daily life or in class in the form of a diary.

Contents of math diary. The content of mathematics diaries is rich and not limited to certain categories. It can be said that almost anything related to mathematics will work. For example, you can write about the difficulties you encountered in solving math homework, or you can write about the results of your pre-class previews. The lessons learned after the exam are also advisable.

Requirements for keeping a mathematics diary. The most important thing when writing a diary is to seek truth from facts, not to make up, let alone exaggerate the facts; to have various forms and not to be too single, otherwise the content will appear boring and the mathematics diary assigned by the teacher will lose its original meaning; the language should be as concise as possible , don’t talk nonsense.

Mathematics Diary for Volume 1 of Sixth Grade

Wednesday, October 10, Sunny

Mathematics is indispensable in life!

Today, I One thing I did at home was to measure one-yuan coins.

The tools are: a set of rulers, a one-yuan coin, and a colored pen.

First use the colored pen to draw the shape of the one-yuan coin. Diameter, its diameter is 2.5 centimeters. To calculate the circumference of a circle, use 2.5 times 3.14 to equal 7.85 centimeters. If you know the radius of the circle, to find the circumference of the circle, it should be: the radius of the circle times 3.14 times 2.< /p>

I also know: The line segment that connects the center of the circle to any point on the circle is called the diameter, which is generally represented by the letter r. The line segment that passes through the center of the circle and has both ends at the center of the circle is called the radius, which is generally represented by the letter d. .The center of the circle determines the position of the circle, and the radius determines the size of the circle

Today, I had nothing to do at home, so I found a wheel from a former four-wheel drive. I started to measure its circumference. I couldn’t find the dot. It was a difficult task, so I borrowed some methods from the class. Since the wheel was installed here, it was difficult to measure. In the end, I drew a circle on the paper according to the size of the wheel.

The diameter was measured. 3, 14×2, 5=7, 85 (cm).