Millimeter of awareness? How much is one millimeter?

1. The first teaching activity is to let students know how long is 1 decimeter. Ask students to estimate and then measure the pencil of about 10 centimeters, and when students measure the pencil to be about 10 centimeters, the relationship between decimeters and centimeters will be drawn out. 2. The second teaching activity is to let students know how long is 1 millimeter.

Ask students to measure a little more than 6 cm of small wooden sticks, when the students can't say why they can't say "a little more", I take the opportunity to guide the students to observe how many small cells are in the middle of 1 cm, and when the students say 10 small squares, I introduce each small cell to the students is 1 millimeter, so that 1 centimeter = 10 millimeters. 3. In order to deepen students' understanding of 1 decimeter and 1 millimeter, I also let students actually measure some common objects in life, some measure the length, width and thickness of math books, some measure the length, width and height of their stationery boxes, and some measure the thickness of coins, etc., so that students can further deepen their perceptual understanding of length units, and at the same time make length units have been applied.

Use group discussions, and be kind when introducing "millimeters", for example, it would be better for us to meet a new friend "millimeters" than to directly say that a new unit would be introduced. Secondly, there should be sufficient preparation before class, such as what to do before class, as well as exercising students' pre-study habits, so that they can be given more hands-on ability in class, rather than giving them more time to prepare. Most importantly, students should be given immediate feedback during class.

For example, if you say praise, you should be specific, who to praise, give them the power of an example, and say why they are praised, so that other students can make it clear what they should do.

One millimeter refers to one thousandth. The millimeter, also known as the metric mile (or meter), is a unit of length and a unit of rainfall, and the unit of length refers to the basic unit of measuring spatial distance, which is the basic unit formulated by human beings in order to standardize length. Its SI unit is "meter" (symbol "m"), and the commonly used units are millimeters (mm), centimeters (cm), decimeters (dm), kilometers (km), meters (m), micrometers (m), and nanometers (nm).

The meaning of millimeters

mm refers to millimeters and is a unit of length. The unit of length refers to the basic unit of measuring the distance in space, and it is the basic unit formulated by human beings in order to standardize the length. mm is also a unit of rainfall.

Rainfall refers to the depth of the water layer that falls to the surface in a certain period of time, and is expressed in millimeters. mm first appeared on the Taiwanese network, which means "beautiful cutie", that is, a beautiful girl.

Answer: One millimeter is equal to one multiplied by ten to the sixth power of nanometers.

1 m 10 -9 nm.

1 meter 1000 mm.

1 mm 10-nanometer.

Hello, 1 millimeter (mm) = 1000000 nanometers (nm).

The millimeter, also known as the millimeter, is a unit of length and a unit of rainfall, abbreviated as mm in English. About the advance rate of millimeters: 1 millimeter (mm) = centimeter (cm) = decimeter (dm) = meter (m) = kilometer (km) = 1000 microns (m) = 1000000 nanometers (nm).

Let's expand the conversion relationship of length units with relevant information: 1. Chinese unit zhang = 10 feet; 1 foot = 10 inches; 1 inch = 10 points; 1 point = 10 centimeters of rice; 1 ft decimeter; 1 inch centimeter kilometer (km) = 1000 meters (m); 1 meter = 100 centimeters (cm); 1 cm = 10 mm (mm li = 150 zhang = 500 meters; 2 li = 1 km (1,000 m).

Imperial units (1), mile: 1 mile = 1760 yards = 5280 feet = kilometers; (2), yard (yd): 1 yard = 3 feet = meters; (3), Yingxun (FA):

1 fathom = 2 yards = m; (4), wave (furlong): 1 wave = 220 yards = m; (5), feet (ft): 1 foot = 12 inches = centimeters; (6), inch (in):

1 inch = centimeter.

This is a question and answer about the concept - Wukong is asking: Where is my "golden hoop stick"? And Bajie's reply is:

Your "golden hoop" and "stick" (good) are "good" (good and good) are in good match with the hairstyle. That is, a method of changing concepts with stealing, cleverly or taking care of his questions and answers. To use another idiom to describe it is to steal the day.

The millimeter, also known as the metric mile (or metric mile), is a unit of length and a unit of rainfall, abbreviated as mm.

10 mm is equivalent to 1 centimeter, 100 mm is equivalent to 1 decimeter, and 1000 mm is equivalent to 1 meter.

The millimeter, also known as the millimeter, is a unit of length and a unit of rainfall, abbreviated as mm in English.

is a unit of measurement for length.

1 cm = 10 mm.

The unit of length is one-tenth of a centimeter.

One centimeter is equal to ten millimeters.

One, they are both units of length.

2. Conversion between them:

1 meter = 10 decimeters (dm).

1 decimeter = 10 centimeters (cm).

1 centimeter = 10 millimeters (mm).

3. Teaching Objectives:

1. Understand the unit of length - decimeter, millimeter, establish the concept of length of 1 decimeter and 1 millimeter, and know that 1 meter = 10 decimeters, 1 decimeter = 10 centimeters, and 1 centimeter = 10 millimeters.

2. Experience mathematics in hands-on practice and experience the usefulness of learning mathematics.

3. Develop a good habit of being careful and serious in actual operation.

Teaching focus: Establish the concept of length of 1 mm and 1 decimeter.

Teaching difficulty: the formation process of the concept of length of 1 mm and 1 decimeter.

Millimeter recognition:

Teaching objectives: 1. In the measurement activities, clarify the practical significance of millimeters and decimeters, and establish the length representation of 1 millimeter and 1 decimeter.

2. In the practical activities such as observation, conjecture and verification, master the clever advance rate of 1 meter = 10 decimeters, 1 decimeter = 10 centimeters, and 1 centimeter = 10 millimeters.

3. In the actual measurement activities, initially learn to choose the appropriate length unit to measure the length of the object.

4. Gradually understand the close connection between mathematics and practical life, and initially cultivate the awareness of solving practical problems.

Teaching focus: understand the length units of millimeters and decimeters, and initially establish the concept of length of 1 mm and 1 decimeter.

Teaching difficulty: correctly understand the relationship between millimeters, centimeters, decimeters, and meters.

Teaching preparation: courseware, rulers, coins, magnetic cards, etc.

Teaching process: 1. Introduce the situation and trigger thinking.

Teacher: (showing a new children's drink on the market) Can you estimate the height of the beverage box and then measure its height?

Students report the results of their measurements.

Teacher: When you measure more than 8 centimeters, the part is less than 1 centimeter, and we can't accurately represent the length of the object that is measuring the loose key with centimeters, so we need to use a unit of length smaller than centimeters: millimeters.

Design intent: Through the measurement activity of small beverage cartons, students can experience the practical significance of millimeters on the basis of previous experience. 】

One, they are both units of length.

2. Conversion between them:

1 meter = 10 decimeters (dm).

1 decimeter = 10 centimeters (cm).

1 centimeter = 10 millimeters (mm).

3. Teaching Objectives:

1. Understand the unit of length - decimeter, millimeter, establish the concept of 1 decimeter and 1 millimeter of the length of the old chop, and know that 1 meter = 10 decimeters, 1 decimeter = 10 centimeters, and 1 centimeter = 10 millimeters.

2. Experience mathematics in hands-on practice and experience the usefulness of learning mathematics.

3. Develop a good habit of being careful and serious in actual operation.

Teaching focus: Establish the concept of length of 1 mm and 1 decimeter.

Teaching difficulty: the formation process of the concept of 1 mm finch scale and 1 decimeter length.