Through the educational function of homework, students' all-round development can be realized. According to the actual situation of students, a hierarchical, flexible and individualized homework management scheme is designed from the aspects of homework content, homework form and evaluation. Such as "the meaning of comparison" homework design:
? 1. Think about it and I'll fill it in.
( 1)2÷7=( ):( )=( )
(2)( )÷( )=( ):( )
(3) Comparatively speaking, the preceding paragraph is equivalent to () in the division formula. The latter term is equivalent to () in the division formula. The comparison symbol is equivalent to () in the division formula. This ratio is equivalent to () in the division formula. (4) Comparatively speaking, the preceding paragraph is equivalent to () in score. The latter item is equivalent to () in the music score. The comparison symbol is equivalent to () in the score. The proportion is equivalent to () in the score.
2. screen carefully and I will judge.
The ratio of (1) 5: 4 is ()
(2) Rewrite 15: 14 as the component number in the form of ().
(3) The ratio is usually expressed in fractions, and can also be expressed in decimals or integers. ( )
(4) The term before and after the ratio can be any number. ( )
(5) Soccer Team A beat Soccer Team B 3-0, indicating that under special circumstances, the latter term of the ratio can be 0. ( )
Examine the questions carefully, and I'll do the math. (Find the ratio of the following ratios)
( 1)2:3
(2)8: 12
(3)0.2: 1.4
(4)3/4:5/6
4. After careful comparison, I will choose.
(1) A section of the road takes 9 hours by car and 3 hours by car. The speed ratio between car A and car B is ().
(2) Put 20g salt into 100g water, and the ratio of salt to brine is ().
Step into life.
(1) A car drives for 3 hours 120km, and B car drives for 4 hours 140km, and the ratio of the driving time of the two cars is (); The ratio of distance is (); The speed ratio is ().
(2) A job needs 4 hours for Xiaohong and 5 hours for Xiaodong. The work efficiency ratio between Xiaohong and Xiaodong is ().
(3) The ratio of sides of two squares is 4: 3, the ratio of perimeters is (), and the ratio of areas is ().
Classroom assignments should be taught face-to-face, with timely comments and feedback. Homework should be accurate, precise, skillful and few, so as to improve classroom effectiveness.
? At the same time, make good use of after-school service time to make up for the shortcomings; Fully tap the existing resources and realize information exchange and resource sharing through various forms such as intra-group teaching and research and cross-group teaching and research.
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