Activity objectives:

1, can choose natural objects to measure the length of articles, and initially master the basic measurement method of "end to end"

2. Know that the length of the measuring tool is related to the measurement results, and experience the fun and sense of accomplishment brought by the measurement activities.

Activity preparation:

Measuring tools: rope, long stick, paper tube, pen.

Recording paper sheet

Activity flow:

First, teachers know that measurement needs tools by organizing children to discuss their height and weight.

Second, the basic process:

1. Invite children to measure the length of the table and explore the basic methods of natural measurement.

(1) Let the children discuss what other measuring tools can be used besides rulers, and guide them to name all kinds of natural measuring tools (long sticks, ropes, pens, etc. ).

(2) Let the children freely measure the length of the table in groups and make records.

(3) Ask several children to demonstrate different measurement methods. (Teacher Qu) Teachers and students discuss which method is more accurate.

2. The teacher demonstrates the head-tail measurement method and guides the children to master the essentials.

(1) Discussion: Why do you need to hold this point by hand after measuring once, and then move the wooden stick to continue measuring from this point?

(2) Teachers explain and demonstrate the correct measurement methods, requiring children to operate.

3. Children can freely choose measuring tools to independently measure the length of the table and fill in the record form.

4. Compare the measurement results of different tools, and guide children to find that the length of the measuring tool is related to the measurement results: the longer the measuring tool, the less the number of measurements; The shorter (or smaller) the measuring tool, the more times it is measured (natural end).

Activity expansion:

Measure other things in the environment with natural measuring tools.