CN2349621Y

CN2349621Y - Demonstration caculator for enlightening teaching

Info

Publication number: CN2349621Y
Application number: CN 98231737
Authority: CN
Inventors: 陈红日
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-26
Filing date: 1998-11-26
Publication date: 1999-11-17
Anticipated expiration: 2008-11-26

Abstract

The utility model discloses a demonstration calculator for enlightening teaching, which is composed of a base plate (1), a left support post (3), a right support post (19), a counting portion (22), a digital identifying portion (21), a demonstrating portion (23) of addition, subtraction, multiplication, and division, and a bead hidden plate (2). The utility model is integration of shape and digital, and the utility model which not only can conduct entity calculation but also can conduct in-line calculation has the characteristics of strong visualizability, multiple function, etc. The utility model is an ideal teaching appliance for mathematical enlightening teaching of families, kindergartens, preschools, low grades in elementary schools, etc.

Description

Enlightenment teaching demonstration counter

The utility model relates to a kind of child's initiative teaching appliance, particularly a kind of enlightenment teaching demonstration counter.

At present, infant mathematics formative education, the form that adopts teaching card mostly or on blackboard, write, the mode that adopts number to point mostly in family.In the last few years, some infant mathematics initiative teaching appliances occurred, as Chinese patent CN2046647U (Abacus for children), this abacus can carry out the primary arithmetic facts computing by the rule and the order of written calculation, but function is also fairly simple.Chinese patent CN2054546U (children's digital calculator) and for example, though can do 100 with interior plus and minus calculation, structure is complicated, function is few.

The purpose of this utility model provides a kind of shape, several integrated, and intuitive is strong, both can in kind calculate, but the row formula is calculated again, and the many rudimentary maths initiation teaching aids of function.

The purpose of this utility model is achieved like this:

Be by bedplate (1), left pillar (3), right pillar (19) constitute, and also comprise insighted fractional part (21), and number fractional parts (22) add, subtract, multiplication and division method demonstration part (23), and bead hiding plate (2); (21), the two ends of (22), (23) are contained in respectively on left and right pillar (3) and (19) from top to bottom, bead hiding plate (2) is Shape, be contained in left pillar (3), with the front of right pillar (19) and bedplate (1).

Knowledge fractional part (21) is the straight pin formation by a rectangular slab (18) and two ends thereof, and the pin at two ends is contained in respectively in the circular hole of left and right pillar (3) and (19) upper end; The pros and cons of rectangular slab (18) is printed on numeral respectively.

Number fractional part (22) comprises summand pearl (8), crosses the round cross bar (12) of (8) usefulness; Add beads (9), sign of operation (4) crosses the round cross bar (13) of (4) and (9) usefulness; And beads (15) and numerical symbol (5) and cross (5) and the round cross bar of (15) usefulness (16).

Add, subtract, multiplication and division method demonstration part (23), comprise that shape is the summand prism (6) of positive ten prisms, addend prism (10), with number prismatic (14), (17), sign of operation (7), and numerical symbol (11) and the round cross bar (20) that is used to cross (6), (7), (10), (11), (14), (17).

Counter of the present utility model is divided into upper and lower two parts.The existing bead demonstration number number in kind in top can be listed as vertical calculation again, also insighted several grades.Its shape, several integrated, intuitive is strong, does calculation in kind and can inspire student's thinking in images.The vertical calculation style of top row in kind is held in the lower part, becomes that the row horizontal type is done to add, subtracted, the multiplication and division method is calculated, and is the intelligence door that carried out writing on the blackboard demonstration and books study breakdown.This teaching aid can carry out 10 with interior add, subtract, the demonstration of multiplication and division four fundamental rules enlightenment teaching, can finish addition 100 topics, subtraction 53 topics, multiplication 27 topics, division 25 topics add up to the calculations of 205 topics.It can demonstrate the decomposition, combination of number, strange, even number etc., thereby function is more.Again because it is equipped with bead hiding plate (2); When the bead of counting calculates, can with wouldn't with bead to be allocated to the back of plate (2) hidden, plate (2) has open slot simultaneously, makes each prism only expose a faceted pebble, i.e. a numeral.Like this, just more can concentrate student's notice, the phenomenon that avoids confusion has improved teaching efficiency.

Accompanying drawing 1 is a front view of the present utility model;

Accompanying drawing 2 is rear views of the present utility model;

Accompanying drawing 3 is the utility model cut-open views along the A-A axis.

Below in conjunction with accompanying drawing, describe an embodiment of the present utility model in detail.

Present embodiment is by bedplate (1), left pillar (3), and right pillar (19), number fractional part (22) is known fractional part (21), add, subtract, multiplication and division method demonstration part (23), and bead hiding plate (2) constitutes.

Number fractional part (22) is divided into third gear, and the one shelves are the summand shelves, includes 10 summand pearl (8) and circle cross bars (12) that shape is identical with bead, and pearl (8) all is through on the bar (12), can left and rightly stir, but also distaff (12) is rotated; Second grade is the addend shelves, comprise 10 add beads (9) and justify cross bar (13) identical with summand pearl (8), and sign of operation four-prism (4), post (4) and 10 add beads (9), be through successively from left to right on the bar (13), can left and rightly stir or distaff (13) is rotated, four faceted pebbles of post (4) are printed on respectively+,-, *, the ÷ symbol; Third gear is and several grades, comprise numerical symbol four-prism (5), and beads (15) identical with pearl (8), and circle cross bar (16) with 20, post (5), pearl (15) are through on the bar (16) from left to right successively, can left and rightly stir or distaff (16) rotation, four faceted pebbles of post (5) are printed on respectively=, ≠,＜,＞symbol, summand pearl (8) adds beads (9), and beads (15), the right-hand member back that all can be allocated to bead hiding plate (2) to the right is hidden.

Know fractional part (21), it is a block length square plate (18), respectively there is a straight pin at the two ends of plate, plate (18), the front is printed on 1 to 10 from left to right successively, its reverse side is printed on 11 to 20 successively, and the straight pin at plate (18) two ends is contained in the circular hole of left and right pillar (3) and (19) upper end, can do page turning and rotate.

The adding of counter, subtract, multiplication and division method demonstration part (23), comprise summand prism (6), addend prism (10) and number prismatic (14), (17), the sign of operation prism (7) that are shaped as positive ten prisms; With numerical symbol prism (11) and circle cross bar (20); Ten faceted pebbles of summand prism (6) and addend prism all are printed on 1 to 10 (from left end, clockwise direction) respectively; All be printed on 0,1 to 9 (from left ends, clockwise direction) respectively with ten faceted pebbles of number prismatic (14) and (17); 20 faceted pebbles of prismatic (7) and (11) all are printed on respectively+,-, * ,-,+, ÷, * ,-,+, ÷ and=,＞, ≠ ,=,＜, ≠ ,=,＞, ≠,＜(from left end, clockwise direction); Prismatic (6), (7), (10), (11), (14), (17) are through on the bar (20) from left to right successively, but distaff (20) is rotated.

The lower end of the left and right pillar of counter (3), (19), be separately fixed at the top summary position inside of the left and right end of bedplate (1), bar (12), (13), (16), (20) from top to bottom, two ends are separately fixed at the right side and the left side of left and right pillar (3), (19), are The bead hiding plate of shape (2) is fixed on and is made of left pillar (3) and right pillar (19) and bedplate (1)

The front of framework.

When using enlightenment teaching demonstration counter:

1, with bead shelves number, counts to 40 from bead 1.

2, begin to know number with the top shelves, slave plate front 1 acquires 10, and the back side of returning face plate (18) acquires 20 from 11 again.Work in coordination with number wheel (14), (17) at last, link up together, acquire 100 numerals of 99 from 0.

3, each shelves is used, can demonstrates decomposition, the combination of number, identification is strange, even number etc.; Can demonstrate the primary arithmetic facts computing.When computing, figure the vertical computing of Zhu Liecheng with material object earlier, shine the computing of last style row horizontal type with number wheel shelves again.Become numerical expression by form like this, just learned the primary arithmetic facts operational method very like a cork.

Claims

1, a kind of enlightenment teaching demonstration counter is by bedplate (1), left pillar (3), right pillar (19) constitutes, and it is characterized in that: comprise insighted fractional part (21), number fractional part (22), add, subtract, multiplication and division method demonstration part (23), and bead hiding plate (2); (21), the two ends of (22), (23) are contained in respectively on left and right pillar (3) and (19) from top to bottom, bead hiding plate (2) is Shape, be contained in left pillar (3), with the front of right pillar (19) and bedplate (1).

2, enlightenment teaching demonstration counter according to claim 1 is characterized in that: knowledge fractional part (21) is the straight pin formation by a rectangular slab (18) and two ends thereof, and the pin at two ends is contained in respectively in the circular hole of left and right pillar (3) and (19) upper end; The pros and cons of rectangular slab (18) is printed on numeral respectively.

3, enlightenment teaching demonstration counter according to claim 1 is characterized in that: number fractional part (22), comprise summand pearl (8), and cross the round cross bar (12) of (8) usefulness; Add beads (9), sign of operation (4) crosses the round cross bar (13) of (4) and (9) usefulness; And beads (15) and numerical symbol (5) and cross (5) and the round cross bar of (15) usefulness (16).

4, enlightenment teaching demonstration counter according to claim 1, it is characterized in that: add, subtract, multiplication and division method demonstration part (23), comprise that shape is the summand prism (6) of positive ten prisms, addend prism (10), with number prismatic (14), (17), sign of operation (7), and numerical symbol (11); And the round cross bar (20) that is used to cross (6), (7), (10), (11), (14), (17).