"Understanding Equations and Equations" Equations PPT Courseware

Description

"Understanding Equations and Equations" Equations PPT Courseware

teaching objectives

1. Combined with the schematic diagram of the balance, experience the process of understanding equations and equations through mathematical activities such as observation, formulation, induction, and analogy.

2. Understand the meaning of equations and equations, be able to judge which ones are equations and which ones are equations, and be able to use equations to express equivalent relationships in specific situations or written descriptions.

3. Actively participate in mathematical activities, have curiosity and thirst for knowledge about equations, and understand the role of using equations to express equivalent relationships.

situation creation

Observe this object, do you know what it is?

Explore new knowledge

For example, 20+30=50, 30+X=80, 2X=100...these expressions expressing equal relationships are called equations. Among them, 30+X=80, 20X=100... are called equations.

An equation with unknown numbers is called an equation.

In conclusion

Equality: An expression that expresses an equality relationship is called an equation.

Equations: Equations containing unknown quantities are called equations.

give it a try

Determine which of the following expressions are equations and which are not equations?

Equation: 30＋X＝100 X＋40＝90

4X＝32

Not an equation: 23-8=15 8-3X>6

2X＋5

Consolidate application

practice

1. Look at the picture and list the equations.

32+X＝57 X+11＝39

3X＋4＝40

2. Read it first, then write the equations.

(1) The capacity of a car is 5 tons. If you use this car to transport X times, you can transport 40 tons of goods.

5X＝40

(2) The price of a bottle of mineral water is 2.5 yuan, and the price of a loaf of bread is X yuan. The total cost of buying 2 loaves and 1 bottle of mineral water is 11.9 yuan.

2X+2.5=11.9

3. List the equations.

(1) X plus 42 equals 56.

(2) 9.6 divided by X equals 8.

(3) 5 times X minus 21, the difference is 14.

(4) 6 times X plus 10, the sum is 20.8.

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For more information about the PPT courseware "Equations and Understanding Equations and Equations", please click the Equations ppt and Understanding Equations and Equations ppt tag.

File Info

Update Time: 2024-11-28

This template belongs to Mathematics courseware Hebei Education Edition Fifth Grade Mathematics Volume 1 industry PPT template

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