Review the common quantity and sort out the common quantity knowledge points

1. Review the content.

Common amounts. 2. Knowledge inventory.

Teaching content: p87

The content of the content and do it, exercise sixteen.

Title. Teaching Objectives:

Organize and review the quantities and corresponding units of measurement that have been learned, and further understand the length, area, and volume.

volume) mass, time and its unit of measurement, and appreciate the connections and differences between them.

Learn more about the actual size of the unit of measurement, deepen your understanding and grasp the progress of the adjacent unit of measurement of various quantities.

rate, which will be rewritten in different units of the same quantity.

Learn how to review and cultivate a good habit of systematically organizing knowledge.

Teaching Focus: Organize and review the quantities and corresponding units of measurement that have been learned, and appreciate the connections and differences between them.

Knowledge point 1. Common units of measurement and their advance rates (see textbooks.

page) Ask students to review what quantities they have learned. What are their units of measurement? What is the rate of advancement between units? Show it again.

**: Knowledge point 2.

Reciprocity between names.

There is also a part of the content that rewrites different units of measurement of the same quantity, so that students are recalling the quantities and meters they have learned.

When measuring the unit, the teacher can consciously put the length, when writing on the board

Units of area, volume, and volume are put together.

It is convenient for students to compare them and strengthen their awareness of the connections and differences between them.

The next can be for the same amount.

The teacher should guide the students to sort out and consolidate the rewriting methods during the review.

Rewrite the number of high-level units to the number of low-level units and multiply them by the advance rate, and remove the advance rate instead.

If the advance rate is.

, you can also move the decimal point to the right (left) by one, two, three, ......to finish.

The rewriting of singular numbers is relatively simple, and the rewriting of complex numbers is relatively troublesome, so teachers can combine specifics.

examples for students to reinforce.

Upper secondary school subject network, where there are learning methods, and past college entrance examination questions, teaching lesson plans.

Summary. Length unit: * km km * m * decimeter dm * cm cm * mm mm 1 cm = 10 mm 1 dm = 10 cm 1 m = 10 dm 1 m = 100 cm 1 km = 1000 m Area unit:

square centimeter cm square dm * square meter m * square kilometer km1 square meter = 100 square decimeter 1 square decimeter = 100 square centimeter 1 square centimeter = 100 square millimeter 1 metric inclination = 10,000 square meters 1 square kilometer = 100 hectares Volume unit: * cubic meter m * cubic decimeter d * cubic centimeter cm 31 cubic meter = 1000 cubic decimeter 1 cubic decimeter = 1000 cubic centimeter.

Length unit: * km * m m * decimeter dm * cm * mm mm 1 cm = 10 mm 1 decimeter = 10 cm 1 meter = 10 decimeters 1 meter = 100 cm 1 km = 1000 meters Area unit: square centimeter cm square dm * square meter m * balance tomb km 1 square meter = 100 square decimeter 1 square decimeter = 100 square centimeter 1 square centimeter = 100 square millimeter 1 square millimeter 1 square kilometer = 100 square kilometers 1 square kilometer =100 hectares of units of the body

cubic meter m * cubic decimeter d * cubic centimeter cm31 cubic meter = 1000 cubic decimeter 1 cubic decimeter = 1000 cubic centimeter.

Volume unit: liter l ml 1 liter = 1000 ml 1 liter = 1 cubic meter * 1 ml = 1 cubic centimeter mass unit: * ton t * kg kg * g * 1 ton = 1000 kg * 1 kg = 1000 g Time unit:

World CCO time 1st century = 100 years * 1 year = 365 days flat year * one year = 366 days leap year * 1, 3, 5, 7, 8, 10, 12 are big months and big months have 31 days * 4, 6, 9 and rotten, eleven is small months, small months and small months have 30 days * ordinary year mu zi 28 days in February, 29 days * 1 day = 24 hours * 1 hour = 60 minutes * 1 minute = 60 seconds Monetary unit: yuan * jiao * minute.

Currency unit: yuan * jiao * cents 1 yuan = 10 jiao * 1 jiao = 10 cents 1 yuan = 100 cents.

1. Fill in the blanks.

1. Knowledge networks.

1.Length units: km, m, dm, cm, mm.

2.Area units: square kilometers, hectares, square meters, square decimeters, square centimeters, square millimeters.

3.Units of measurement Volume units: cubic meters, cubic decimeters, cubic centimeters.

4.Volumetric units: liters, millimeters.

5.Units of mass: ton, kilogram, gram.

6.Time units: year, month, day, hour, minute, second.

7.RMB units: yuan, jiao, cent.

Second, the main points of knowledge1) Commonly used units of measurement and conversion relationships.

1.Units of length.

1) 1 km = 1000 meters (2) 1 meter = 10 decimeters.

3) 1 dm = 10 cm (4) 1 cm = 10 mm.

2.Area units.

1) 1 square kilometer = 100 hectares (2) 1 hectare = 10,000 square meters.

3) 1 square kilometer = 1,000,000 square meters (4) 1 square meter = 100 square decimeters.

5) 1 square decimeter = 100 square centimeters (6) 1 square centimeter = 100 square millimeters.

3.Volume units.

1) 1 cubic meter = 1000 cubic decimeters (2) 1 cubic decimeter = 1000 cubic centimeters.

3) 1 cubic centimeter = 1000 cubic millimeters.

4.Volumetric units.

1) 1 liter = 1000 ml (1) 1 liter = 1 cubic decimeter.

3) 1 ml = 1 cubic centimeter.

5.Units of mass.

1) 1 ton = 1000 kg (2) 1 kg = 1000 grams.

6.Units of time.

1) 1 year = 12 months (2) 1 year = 365 days (common year) 3) 1 year = 366 days (leap year).

4) 24 o'clock on the 1st (front 5) 1 hour = 60 minutes (6) 1 minute = 60 seconds.

7.RMB units.

1) 1 yuan = 10 jiao (2) 1 jiao = 10 points.

Sort out the amount of knowledge points.

Length unit: *kilometer (km) *meter (m) *decimeter (dm) *centimeter (cm) *millimeter (mm).

1 cm = 10 mm 1 dm = 10 cm 1 m = 10 dm.

1 meter = 100 centimeters 1 kilometer = 1000 meters.

Unit of area: square centimeter (cm) square decimeter (dm) square meter (m) square kilometer (k m).

1 square meter = 100 square decimeters 1 square decimeter = 100 square centimeters.

1 square centimeter = 100 square millimeters 1 metric tilt = 10,000 square meters.

1 square kilometer = 100 hectares.

Volume unit: * cubic meter (m) cubic decimeter (dm) cubic centimeter (cm).

1 cubic meter = 1000 cubic decimeters 1 cubic decimeter = 1000 cubic centimeters.

Volume unit : liter (l) milliliter (ml).

1 liter = 1000 ml 1 liter = 1 cubic meter * 1 milliliter = 1 cubic centimeter.

Unit of mass: * tonnes (t) * kilograms (kg) grams (g) *

1 ton = 1000 kg * 1 kg = 1000 grams.

Time units: century, year, month, day, hour, minute, second.

1 century = 100 years * 1 year = 365 days (common year) one year = 366 days (leap year).

The first, third, fifth, seventh, eighth, tenth, and twelfth are the Great Moons, and the Great Month has 31 days.

The fourth, sixth, ninth, and eleventh are the small months and the small months have 30 days.

There are 28 days in February in a normal year and 29 days in February in a leap year.

1 day = 24 hours * 1 hour = 60 minutes * 1 minute = 60 seconds.

Currency unit: Yuan * Jiao * Cent.

1 yuan = 10 jiao * 1 jiao = 10 points 1 yuan = 100 points.