1, like to participate in surveying activities, willing to use the knowledge of natural surveying to solve the problems encountered.

2. Choose tools independently, measure the length of objects, get a preliminary understanding of the relationship between measuring tools and measurement results, and learn the correct measurement methods.

3. Stimulate children's spirit of inquiry, and develop children's abilities of observation, comparison and judgment in hands-on activities.

Activity preparation:

1, measuring tools and chalk of different lengths

2. Story pictures

3. Recording paper and pen

Activity flow:

(A) the creation of problem situations

Introduce a story and ask a question: How to measure the roof length of a car when Blue Cat and Naughty Boy argue?

Children discussion

(B) Children try activities

Children choose their own tools to measure an object.

Guide children to compare and observe the measured results and compare them with their peers. What did you find?

(3) Discussion

1, compare the measurement results.

Guide children to find the relationship between measurement results and tools.

2. Discuss the measurement method.

Find the starting point; Measure along the edge line, and do not deviate from the edge line; end to end

3. Summary: Different lengths of measuring tools lead to different results.

(d) Independent measurement of children

1, put forward the requirements of measurement: choose tools, find the starting point when measuring, mark with strokes, measure along the border and connect the first place.

2, children's operation.

3. Discussion and summary:

(1) What tool did you use to measure it? What was the result?

(2) Who also uses this tool? Is the result the same?

(3) What else did you measure? What was the result? Does anyone measure like him? What about your results?

(5) Extended activities

1, Discussion: What else can be used as a measuring tool?

2. Which parts of our body can also be used as measuring tools?

3, children's games: long jump