I urgently want a sixth grade science experiment experience

Do your own thing.

Scientific concepts. The triangular frame has stability, and the use of the triangular frame can be used to strengthen the frame structure.

Process & Methodology.

Reinforcement of the frame structure with a triangular frame.

Design and fabricate a frame structure that can support heavy objects.

Emotions, attitudes, values.

Experience the necessity of using your brain and hands-on cooperation to make a framework, and get the joy of success.

Preparation for teaching. For small groups: chopsticks or plastic straws, rubber bands, scissors.

Teaching process: 1. Introduce new lessons.

2. Study the simple framework.

1. Practical experience.

Use chopsticks to tie a corner frame and a rectangular frame.

What is the difference in observing the forces of the sutras?

Which one is easy to deform?

Can a rectangular frame be reinforced?

2. Group operations according to requirements, and make records of various shapes.

What is the role of adding a diagonal rod?

And let's talk about the characteristics of the triangular frame.

3. Make a sturdy cube frame.

1. Please don't think about how to make a sturdy cube frame.

2. To make a more complex structure, you should first draw a sketch and calculate the material.

3. How many crossbars do you need to make a solid cube frame? How many vertical rods? How many diagonal rods? Are they the same length?

4. What is the function of each oblique rod? How many triangles are there in a frame?

5. Test the bearing capacity of our cube.

How many books can it carry on our cube frame?

4. Summary.

Board book design: the principles of making the shapes.

Stable. High pressure.

Less material.

1. Leverage;

2. a wheel axle; 3. a pulley;

4. an inclined plane; 5. Gear and chain drive;

6. Change the shape of the paper to increase the bending resistance;

7. The cylindrical and arch bearing capacity is large;

8. The triangular frame is more stable;

Science is a natural science based on observation and experiment, and a lot of scientific knowledge is obtained by careful summarization and thinking on the basis of observation and experiment. As a science teacher, in the process of teaching students scientific knowledge, if you can correctly demonstrate or guide students to experiment, it can play a great positive role in mastering and using knowledge for students, and at the same time, it can also stimulate students' desire for knowledge, as well as cultivate students' rigorous and truth-seeking scientific attitude, so experimental teaching is an indispensable and very important part of science teaching.

1. Look. So-called"Look"Namely"Observe and understand"It is the first link of all experiments, including the selection of experimental equipment, the rules of use of equipment, the scope of use of equipment, and the accuracy of equipment, etc., to have a detailed understanding. For example:

To measure the length of a classroom, do we use a meter ruler or a tape measure? Because the most obvious feature of the meter ruler and the tape measure of the measuring tool is that they have different measurement ranges and scales. If you use a meter ruler, you must use the method of repeated measurement, even if the method and operation are correct, but it still increases the error of the experiment, while the tape measure can be measured at one time, effectively reducing the error.

Before use, we still use it"Look"The position of its zero scale, whether the zero scale is worn out, and its index value. These factors are directly related to whether we are operating properly and whether our readings are accurate.

In the use of thermometers, as a special thermometer, the thermometer has different points from other thermometers, (1) the range is different: other thermometers are generally from 100 to 100 or even larger. And the thermometer scales only from 35 to 42.

2) Different structure: the thermometer has a slender neckline and other thermometers do not, the different structure leads to different use, the thermometer can leave the measured object when reading, and other thermometers are not allowed. It should be worth noting even more:

Before using the thermometer each time, to"Look"Whether the mercury column is returned to the glass bubble, if not, it needs to be thrown a few times, otherwise it may lead to the untruthfulness of the data when used: for example, it is known that the body temperature of A and B is 38 and, after measuring the body temperature of A, the doctor forgets to shake it a few times, and directly measures B's body temperature, then the data displayed on the thermometer will not be 38 but 38