Tisch
Unit 1: Divide apples by division (vertical division)
Knowledge points:
1, master the vertical writing format of division in the table.
2. Master the vertical writing of division and the meaning of each step.
Divide oranges (divide by remainder (1))
Knowledge points:
1, experience the meaning of remainder division.
2. Division with remainder will be expressed vertically, and the remainder must be less than the divisor.
Divide strawberries (divided by remainder (2))
Knowledge points:
1, master the correct test method. Using the multiplication formula, the product of the multiplication of two numbers is closest to the dividend, but less than the dividend.
2, can use the knowledge of division with remainder to solve some simple practical problems.
Charter (for division with remainder (I))
Knowledge points:
Flexible use of remainder division knowledge to solve simple practical problems in life.
Scheduling cars (division with remainder (2) is applied)
Knowledge points:
Flexible use of division with remainder and related knowledge to solve simple practical problems in life.
Unit 2: Mixed operation
Bear Shopping (Mixed Computing (1))
Knowledge points:
1, correctly grasp the operation order of "there are both addition and subtraction in the formula, multiplication first, then addition".
2, can correctly calculate the two-step problem.
Buy flowers (mixed operation (2))
Knowledge points:
Correctly grasp the operation sequence of "addition and subtraction in the formula, division first, then addition and subtraction" and be skilled in calculation.
Crossing the River (Mixed Operation (3))
Knowledge points:
The function of 1. parentheses in mixed operation is to change the operation order.
2. Master the operation sequence of mixed operation with brackets: first calculate inside brackets, then calculate outside brackets.
3, can correctly calculate the operation with brackets.
Unit 3: Direction and Route
Pinpoint the direction
Knowledge points:
1. Given a direction (east, south, west or north), you can identify the other seven directions and use these words to describe the position of an object.
2, according to the given direction, can identify the other seven directions in the map.
Know the route
Knowledge points:
1, learn to understand a simple road map in eight directions.
2. According to the road map, you can tell the direction, distance and passing place from the starting point to the destination.
extreme
Unit 4: Large Numbers in Life?
Counting (learn about the new counting unit)
Knowledge points:
1, knowing the counting units "thousand" and "ten thousand".
2. Understand the relationship of counting units within ten thousand: 10, one is ten; 10 Ten is one hundred; 10 One hundred is one thousand; 10 One thousand is ten thousand.
3. Master the numerical order of numbers within 10,000. Starting from the first place on the right, the order is one, ten, one hundred, one thousand, ten thousand.
4, combined with the specific situation, have specific feelings about "one thousand" and "ten thousand".
5. Feel the decimal counting method of "all decimals are one" initially.
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Dial (read and write within 10,000)
Knowledge points:
1, number: one by one; Ten ten place numbers; A hundred places and so on.
2. Can read numbers within 10000: read the numbers on each digit in turn from the high order, and don't read any zeros at the end. Only read one zero if there are one or two zeros in the middle.
3. Can write numbers within 10000: Write the numbers on each digit in turn from the high place. If there is no previous unit, write zero on that number.
4. Feel the decimal counting method of "all decimals are one" initially.
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Compare (compare sizes within 10 thousand)
Knowledge points:
1 will compare the sizes of numbers within 10,000. Methods: First, compare the digits. If the numbers are the same, compare the numbers first, and then compare the next number. ...
2. Symbols can be used to indicate the size of a number within 10,000.
3. We can estimate the number of people within 10,000 according to the actual situation.
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Unit 5: Measurement
How long is this pencil (decimeter, millimeter)?
Knowledge points:
1. Understand the relationship among meters, decimeters, centimeters and millimeters through actual measurement.
1 decimeter = 10 cm or1DM =10cm;
1m = 10 decimeter or1m =10 DM;
1cm= 10mm or1cm =10mm;
2. Know the actual length of 1 decimeter or 1 millimeter.
3. You can use the relationship between length units for unit conversion.
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How long is 1 km (km knowledge)
Knowledge points:
The length of 1. Experience 1 km.
2. Understand the relationship between kilometers and meters; ? 1 km = 1 000m or1km =1000m.
3, can correctly use the length unit.
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Unit 6: Addition and subtraction (1)
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Buy electrical appliances (oral addition and subtraction)
Knowledge points:
1, master the method of adding and subtracting integer hundred and integer ten, and can do oral calculation correctly.
2, can use the knowledge to solve practical problems.
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Recycle waste batteries (three-digit pen addition)
Knowledge points:
1, master the calculation method of three-digit addition (no carry, carry, continuous carry), and can calculate correctly in writing. During the calculation, the same numbers should be aligned.
2. Estimation method can be used to check the correctness of the calculation results.
3, can use the knowledge to solve practical problems.
Small library (three-digit pen subtraction)
Knowledge points:
1, master the calculation method of three-digit subtraction (no abdication, abdication and continuous abdication), and be able to calculate correctly in writing. In the process of calculation, if you subtract the same counting unit, which digit is not enough to be subtracted, you must retreat to the previous 1, and then subtract the number added to the standard.
2. Estimation method can be used to check the correctness of the calculation results.
3, can use the knowledge to solve practical problems.
Tisso
Unit 7: Understanding Graphics?
Understanding angle (preliminary understanding of angle)
Knowledge points:
1, the angle consists of a vertex and two straight edges;
2. Names, symbols and pronunciations of each part of the angle;
3. The symbol of the angle ("∞") can be used to represent the angle;
4, will compare the size of the angle. Understand that the size of the angle is related to the size of the openings on both sides and has nothing to do with the length of the sides;
? 5, can identify right angles, acute angles and obtuse angles.
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Rectangular and square
Knowledge points:
1. Grasp the characteristics of a rectangular square: both a rectangle and a square have four sides, four right angles, the opposite sides of a rectangle are equal, and the four sides of a square are equal.
2. Understand the relationship between rectangle and square: square is a special rectangle.
3. Can draw rectangles and squares on grid paper.
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parallelogram
Knowledge points:
1. Intuitively understand the parallelogram, knowing that the parallelogram has four sides and four corners, and the opposite sides are equal.
2. Understand that a rectangle is a special parallelogram.
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Appreciation and design
Knowledge points:
1. Further master the graphics you have learned and feel the beauty of graphics.
2. You can design patterns on paper with the patterns you have learned, and there are certain rules for coloring.
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Unit 8: Addition and subtraction (2)
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Book donation activity (three-digit addition)
Knowledge points:
1, can correctly calculate three-digit addition, step-by-step calculation, or direct vertical calculation of three numbers together.
2, can correctly estimate the three-digit addition.
3. Be able to use addition, addition and other knowledge to solve some simple practical problems, which can be formulated step by step or comprehensively.
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Transporting Chinese cabbage (three-digit continuous subtraction)
Knowledge points:
1, can correctly calculate three-digit continuous subtraction, and calculate step by step.
2, can use the knowledge of continuous subtraction, solve some practical problems, can be step by step, can also be a comprehensive formula, some problems can be written directly (see pictures).
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Buy a washing machine (three-digit addition and subtraction mixed operation)
Knowledge points:
1, can correctly calculate the addition, subtraction and mixing of three digits, and gradually get rid of the calculation.
2. Be able to use what you have learned to solve simple practical problems. You can make a step-by-step formula or a comprehensive formula.
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Unit 9: Statistics
? Read statistical charts (bar charts)
Knowledge points:
1. Be able to read statistical charts and get information from them.
2. Understand the bar chart and realize that the bar chart can directly represent quantity.
3. Be able to make simple analysis according to statistical charts.
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Discussion (statistical chart)
Knowledge points:
1, and make a preliminary analysis and prediction of the data in the statistical chart.
2. Through the data recorded in the experiment of "soaking bean sprouts", a statistical chart can be drawn on the grid paper and analyzed.