Teaching thinking on how long 1 meter is.

(20 14- 1 1-27 1 1:44: 16)

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In this class, I try to create conditions for students to participate in practical activities, so that students can observe, operate and communicate independently and arouse their enthusiasm. I designed and implemented such a math teaching activity:

One: Introduction, students come into the classroom with questions.

I just learned the length unit-centimeter, so I tried to measure our blackboard with the ruler in my hand. The student hesitated, and I asked, what's the matter? Too inconvenient, too small, too short. What should I do? (Use a longer ruler) to pave the way for learning 1 meter.

Second, situational creation, students learn new knowledge through observation and operation.

1, play the animation of the stick and let the students say what do you know? (100 root adds up to 1 m), 1 root 1 cm, 100 root several centimeters (100 cm), resulting in 100 cm =/kloc.

2. Intuitively feel how long 1 meter is: take out the meter ruler, and students observe it and compare it with the ruler used in the last class;

It is estimated that 1 meter is from the ground to which part of the teacher's body, and where are the students? Actual measurement after estimation; Open your arms and see how long 1 meter is; Spread your legs and see to what extent 1 m; Stand in a row before and after, how many people have 1 meter;

Third, consolidate the exercise, deepen the impression of 1 meter and apply it to practice.

1, talk about what is about 1 meter in the classroom, and the children's interest is aroused at once. Some children speak accurately, while others speak vaguely. In terms of language expression, it is necessary to cultivate slow word order for students to observe. Children can gradually correct their own understanding and establish it through similarity, observation and comparison.

2, you say I answer, the door is about 2 (), students fill in the unit, at first some students fill in the wrong, practice slowly, all students can answer correctly, so when doing exercises, students finish quickly and this class is more efficient.