Volume Mathematics Diary

Mathematics diary about volume

There are many mathematical mysteries about volume, waiting for our students to discover and explore. The following is a mathematical diary about volume, welcome to read!

Mathematical diary about volume 1

Do you know what volume is? I think you don’t know, then I will tell you You guys! Volume is: the size of the space occupied by an object is called the volume of the object. The units of volume usually include: cubic meter, cubic centimeter, and cubic decimeter, which are represented by letters: m, cm, dm.

How big is 1 cubic centimeter? There are many in our daily life Objects are all 1 cubic centimeter, such as small dice, small squares, many, many. To be precise, the volume of a small cube with an edge length of 1 cm is 1 cubic centimeter. How big is 1 cubic decimeter? 1 cubic decimeter is a cube with an edge length of 1 decimeter. In daily life, there are many things with 1 cubic decimeter, such as chalk boxes, Rubik's cubes, etc. How big is 1 cubic meter? The volume of a cube with an edge length of 1 meter is 1 cubic meter. In daily life, TV boxes and cabinets are approximately 1 cubic meter in size.

There are many mysteries about volume, waiting for us to discover and explore.

? Mathematics diary about volume 2

Today, my parents and I went to play by the river. My father picked up a strange-shaped stone and said to me: "You just learned the cube." and cuboids. Now I am applying what I have learned. Can you tell me what the volume of this stone is? Dad, you really can’t figure out the situation. We are learning the volumes of cuboids and cubes. This stone is not a cuboid or a cube. How can I calculate its volume!? Is there no other way? Dad said seriously.

Looking at my father’s eyes, I knew there must be a good way! But what is the way? Ask my father. I am afraid that he will laugh at me. In order to prevent my father from looking down on me, I have to calm down and be careful. think.

My eyes couldn’t help but stay on the fish tank at home. ?Yes!? I got up and ran to the bathroom, took out a big basin and a fishing net, filled the basin with water, and scooped the fish in one by one, leaving only one that was filled with two-thirds of the water. Empty fish tank.

? What are you doing? I’m asking you for size, not playing with goldfish!? Dad looked at me puzzled. ?Aren’t I begging? It can be done in 5 minutes at most!? I smiled mysteriously and continued to move my hands.

?Here, dad, look. This fish tank is 6 decimeters long and 4 decimeters wide. It is a cuboid. The water depth inside is now 2 decimeters, which is 6?4?2=48 square decimeters. I'm going to put this stone in now. ?Said, I picked up the stone and put it in.

Look, the water level has now risen by 0.2 decimeters! I said proudly while measuring the water level with a ruler.

?So what? Dad pretended to be calm.

?That means the volume of this stone is 6?4?0.2=4.8 square decimeters!? I said proudly.

I talked endlessly: Because if the stone is completely immersed in the fish tank, the volume of the fish tank is equal to the volume displaced by the immersion in the water, which is equal to the volume of the water surface caused by the stone sinking into the water. The volume of water in the fish tank increased by rising. This is actually an equal-area conversion. ?

? Mathematics Diary about Volume 3

After eating, it’s time to eat fruit. I looked at the lovely red apples, and I suddenly asked: How to calculate the volume of an apple?

I asked my dad: Dad, an apple is an irregular object, how to calculate it? What's the volume?

Dad smiled, found a transparent plastic box, filled it with water and said, "The rectangular container in Dad's hand is 15CM long, 10CM wide, and the horizontal plane is 10CM." Calculate, what is the volume of this cuboid?

So, I calculated: 15?10?10=150?10=1500 (cubic centimeters), I said 1500 cubic centimeters.

Dad said with satisfaction:

?Yes. Now put the apples in and measure the height. You see, the water level has risen by 2CM. Therefore, the volume of apple is:

　15?10?(12-10)

　=15?10?2

　=150?2

=300 (cubic centimeters). ?

Today I figured out this problem and I feel very happy.

The world of mathematics is really mysterious! ;