GB2268824A - Educational aids - Google Patents

Educational aids Download PDF

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Publication number
GB2268824A
GB2268824A GB9215347A GB9215347A GB2268824A GB 2268824 A GB2268824 A GB 2268824A GB 9215347 A GB9215347 A GB 9215347A GB 9215347 A GB9215347 A GB 9215347A GB 2268824 A GB2268824 A GB 2268824A
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GB
United Kingdom
Prior art keywords
lid
weights
aid according
educational aid
means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9215347A
Other versions
GB9215347D0 (en
Inventor
Mary Anne Willoughby
Karen Elizabeth Harper
Kelly Anne Butt
Alison Loveday Faiers
Original Assignee
Mary Anne Willoughby
Karen Elizabeth Harper
Kelly Anne Butt
Alison Loveday Faiers
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mary Anne Willoughby, Karen Elizabeth Harper, Kelly Anne Butt, Alison Loveday Faiers filed Critical Mary Anne Willoughby
Priority to GB9215347A priority Critical patent/GB2268824A/en
Publication of GB9215347D0 publication Critical patent/GB9215347D0/en
Publication of GB2268824A publication Critical patent/GB2268824A/en
Application status is Withdrawn legal-status Critical

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics

Abstract

Various types of educational aid are provided, the first being in the form of a see-saw arrangement (21, Figure 2A) wherein the pivotable member (24) thereof comprises means (25) arranged to receive on each side of the pivot (23) any number of predetermined plurality of weights (26) at respective predetermined distances from the pivot (23). The second aid is in the form of a roundabout (1) and comprises a base (3) having a generally planar surface (4, 5) thereon and a lid (6) having another generally planar surface thereon. The base (3) and lid (6) are mounted together for relative rotational movement with the respective surfaces in confronting engagement with each other. The lid (6) is arranged to receive weights (10) thereon to adjust the frictional engagement between the two surfaces when the lid (6) and base (3) undergo relative rotational movement. A third aid is in the form of a child's slide (30 Figure 3A) down whose sloping path (31) different weights (32) can be slid and timed between two spaced actuators (34, 35) for starting and stopping a timing device. The path (31) may be provided with interchangeable strips of material of different coefficients of friction. In all these embodiments, the weights can be in the form of toy figures. In the first and second embodiments, the pivotable member (24) and the lid (6) may be recessed to receive the weights. <IMAGE>

Description

EDUCATIONAL AIDS DESCRIPTION This invention relates to educational aids and is especially, but not exclusively, related to such aids for teaching some of the laws of physics relating to force.

In accordance with one aspect of the invention, there is provided a first educational aid comprising a base having a generally planar surface thereon and a lid having another generally planar surface thereon, the base and lid being mounted together for relative rotational movement with the respective generally planar surfaces being in confronting engagement with each other, wherein the lid is arranged to receive weights thereon to adjust the frictional engagement between the two generally planar surfaces when the base and lid undergo relative rotational movement.

Preferably, the frictional resistance of either or both of the generally planar surfaces of the base and lid can be altered, such that frictional engagement therebetween is correspondingly different when the base and lid undergo relative rotational movement.

In a preferred embodiment of this first educational aid, the pair of generally planar surfaces are annular in shape and flat rings of material of different coefficients of friction are interchangeable to provide either or both of those frictionally engageable surfaces.

The lid may be provided with recesses, or any other suitable means, for receiving weights for adjusting the frictional engagement between the two surfaces, such recesses preferably being in the surface of the lid remote from the associated planar friction surface.

The generally circular base and lid of the preferred embodiment are mounted coaxially with respect to each other by means of a pin which upstands from the centre of the base and upon which the lid is centrally mounted for rotation with respect thereto.

In accordance with another aspect of the invention, there is provided a second educational aid in the form of a see-saw arrangement, wherein the pivotable member thereof comprises means arranged to receive on each side of the pivot any number of a predetermined plurality of weights at respective predetermined distances from the pivot.

Preferably, each said means comprises a row of recesses in the upper surface of the pivotable member, extending from the pivotal axis thereof at right angles thereto.

In accordance with a further aspect of the invention, there is provided a third educational aid comprising means defining a sloping path down which different weights can be slid, respective trigger means spaced apart by a predetermined distance along the sodefined path, and timing means whose operation is arranged to be commenced and terminated by a weight travelling along the path between said respective timing means.

In the preferred embodiment of this third educational aid, the path-defining means is in the form of a slide arrangement with a first trigger means located at or adjacent the top thereof and with second trigger means arranged at or adjacent the bottom thereof, such that initial movement of a weight down the slide path is caused by actuation of the first trigger means which also starts the timing means. As the weight slides down the path and reaches the bottom thereof, it actuates the second trigger means to stop the timing means, such that the time taken for the weight to travel the predetermined distance between the first and second trigger means, is recorded.

The sloping path may be supported by ladder means in a generally inverted "V" configuration to represent a child's slide, with the associated circuitry for the trigger means and, possibly, timing means located between the sloping path and ladder means, preferably in the region of the apex thereof.

The timing means may also include a visual display in the form of a digital display and a reset button for the trigger means and timing means may also be provided.

In order that the inventive educational aids may be more clearly understood, respective embodiments in accordance therewith will now be described by way of example and with reference to the accompanying drawings in which: Figure 1 is a generally perspective, semi-exploded view of a first educational aid in the form of a roundabout; Figures 2A and 2B are respective perspective and elevational views of a second embodiment of educational aid in the form of a see saw; Figure 3A is a perspective view of a third embodiment of educational aid in the form of a slide; Figure 3B is a detail of a trigger mechanism for the slide of Figure 3A; Figures 3C and 3D are respective views of the slide of Figures 3A and 3B in use but showing the operation of another trigger mechanism thereof; and Figures 4A and 4B, 5A to 5G and 6A to 6C are respective sets of worksheets to be used with the three embodiments of educational aid shown in respective Figures 1, 2A and 2B and 3A to 3D.

Referring firstly to Figure 1 of the drawings, here is shown a first embodiment of educational aid in the form of a roundabout indicated generally at 1 and comprising a flat support 2 upon which is mounted a base 3 having an upper annular surface 4 arranged to receive thereon interchangeable flat rings 5 of materials of different coefficients of friction.

A lid 6 has a downwardly dpending circumferential lip 12 and an upwardly-extending conical portion 7 in which is received a pivot 8 upstanding from the support 2, so that the lid 6 can be rotated with respect to the base 3 and associated friction ring 5.

The underside surface of the lid 6 is aranged to engage the ring 5 of frictional material, in use of the aid.

In the upper surface of the lid 6 are provided four pairs of blind recesses 9, each pair extending radially outwardly of the rotational axis 8 of the lid 6. These recesses 9 are arranged to receive differing weights 10. In this particular case, the weights re in the form of figures.

In use of the aid 1, the annulus 5 of friction material is secured detachably to the surface 4 of the base 3 by any suitable means. Such means may comprise the so-called "VELCRO" (Registered Trade Mark) fastener, as indicated generally at 11. The complementary half of that fastener 11 is arranged on the other side of the annular ring 5 of frictional material. The lid 6 is placed over the ring 5, with its downwardly depending lip 12 extending around the side wall 13 of the base 3 and with the underside surface of the lid 6 engaging the upper surface of the friction ring 5.

As indicated above, the ring 5 can be interchanged with another ring having a different coefficient of friction.

In a teaching environment, this roundabout aid 1 can be used to shown students how different friction surfaces make it harder or easier to rotate the roundabout lid 6, thereby demonstrating the phenomenon of friction. Rings 5 of different materials can be placed upon the base 3 of the roundabout 1 and the lid 6 spun. Students may decide to compare the different surfaces of the ring 5 by how hard it is to start rotation, namely, the force applied, or by how long it continues to rotate once it has been rotated initially.

Once the students have understood that some materials are easier to move across other materials, then the basic concept of friction can be comprehended.

Weights, such as that shown at 10, can be placed in the recess 9 in the lid 6, preferably symmetrically about the rotational axis 8, to demonstrate further that friction increases as force is applied.

Turning now to Figures 2A and 2B, here is shown a second embodiment of educational aid in the form of a see saw indicated generally at 21 and comprising a base 22 with a pivot pin 23 mounted between the apic of the two triangular-shaped sides of the base 22. Fixed to that pivot pin 23 is a pivotable member 24 constituting the main component of the see saw 21.

A row of spaced, blind recesses 25 extend along the upper surface of the member 24 on opposed sides of the pivot pin 23 and generally normal thereto. Each of these recesses 25 is arranged to receive different weights 26, again in the form of toy figures. The weights 26 are loaded such that the majority of the weight is in the lower region thereof, as shown at 27.

The see saw 21 can be used to demonstrate the law of moments, that is to say, the distance from the pivot axis represented by the pivot pin 23 multiplied by the weight on one side equalling the distance from the pivot pin 23 multiplied by the weight on the other side. If these moments are equal the see saw 21 is in balance.

For instance, the recesses 25 in the member 24 are evenly spaced at 3cm intervals on either side of the pivot pin 23 and are numbered 1 to 5, 1 being the recess closest to the pivot in each case. Accordingly, the sum of the numbers on one side of the pivot pin 23 should equal the sum on the other side of the pivot pin 23 if the see saw 21 is to balance.

In more detail, if equal weights 5 are located in recesses 2 and 3 on one side of the pin and the same weight is in hole 5 on the other side of the pin 23, then the pivotable member 24 will balance in equilibrium as 2 + 3 = 5.

Turning now to the third embodiment of educational aid shown in Figures 3A to 3D, a child's slide arrangement indicated generally at 30 in Figure 3A, comprises a downwardly sloping path 31 down which different weights 32 can be slid, with respective trigger means (not shown) including actuators 35 and 34 located adjacent the top and bottom of the path 31.

Associated with the trigger means is a timing device (also not shown) which is started by operation of the actuator 35 and is stopped by operation of the actuator 34.

The actuator 35 is connected to a pin 33 protruding through a hole 39 adjacent the top of the slope 31 which are movable downwardly in unison against a spring bias, as shown at 36, to close a pair of electrical contacts 37, 38 located in the upper portion of the housing 40 of the slide arrangement 30. The lower contact 38 is connected to the timing device by a conductor 41.

The actuator 34 at the bottom of the slope 31 is also connected to the timing device. A digital time display 42 mounted in the housing 40 provides an indication of the time difference between operation of the actuators 35 and 34. A reset button 43 for the timing device is also provided.

In operation of this third embodiment of educational aid, a weight 32 is placed at the top of the slope 31, resting against the pin 33 as shown in Figure 3A. When the actuator 35 is depressed, the pin 33 is also depressed into the associated hole 39, to allow the weight 32 to slide down the slope 31, as shown in Figure 3C. Such downward movement of the actuator 35 closes the electrical contacts 37, 38, to start the timing device and, when the weight 32 reaches the lower actuator 34, the timing device is stopped.

The time taken for the weight to travel between the pin 33 and actuator 34 is indicated on the digital time display 42.

The slope 31 may be provided with interchangeable strips of material of different coefficients of friction, to demonstrate once again the principle of friction. For instance, a sandpaper strip could be used to show that the speed of descent of the weight 32 down the slope 31 is less than that when no friction strip is employed.

Each embodiment of educational aid described above, may be supplied with a set of worksheets to assist a teacher in helping pupils to understand the physical law being demonstrated with the aids.

For example, a set of worksheets for the embodiment (roundabout) described above with reference to Figure 1, is shown in Figures 4A and 4B, whilst a set of worksheets for the second embodiment (see saw) described in relation to Figures 2A and 2B, is shown in Figures 5A to 5G. The third embodiment (slide) of Figures 3A to 3D is supplied with a set of worksheets, as shown in Figures 6A to 6C.

Thus, the invention also provides a learning "kit" comprising one or more of the inventive educational aids defined above and its or their respective worksheets.

Claims (24)

1. An educational aid in the form of a see-saw arrangement, wherein the pivotable member thereof comprises means arranged to receive on each side of the pivot any number of a predetermined plurality of weights at respect predetermined distances from the pivot.
2. An educational aid accordingly to claim 1, wherein said weight-receiving means comprises a row of recesses in the upper surface of the pivotable member, extending from the pivotal axis thereof at right angles thereto.
3. An educational aid according to claim 2, wherein each recess is arranged to receive different weights.
4. An education aid according to claim 2 or 3, wherein the recesses are evenly spaced on either side of the pivotal axis.
5. An educational aid according to any preceding claim comprising a base with a pivot pin to which the pivotable member is attached and which is mounted between the apices of two-triangularly-shaped sides of the base.
6. An education aid according to any preceding claim including weights in the form of toy figures.
7. An educational aid according to any preceding claim,wherein the weights are loaded such that the majority of the weight is in the lower region thereof.
8. An education aid substantially as hereinbefore described with reference to Figures 2A and 2B and Figures 5A to 5G of the accompanying drawings.
9. An educational aid comprising a base having a generally planar surface thereon and a lid having another generally planar surface thereon, the base and lid being mounted together for relative rotational movement with the respective generally planar surfaces being in confronting engagement with each other, wherein the lid is arranged to receive weights thereon to adjust the frictional engagement between the two generally planar surfaces when the base and lid undergo relative rotational movement.
10. An educational aid according to claim 9, wherein the frictional resistance of either or both of the generally planar surfaces of the base and lid can be altered, such that frictional engagement therebetween is correspondingly different when the base and lid undergo relative rotational movement.
11. An educational aid according to claim 9 or 10, wherein the pair of generally planar surfaces are annular in shape and flat rings of material of different coefficients of friction are interchangeable to provide either or both of the frictionally engageable surfaces.
12. An educational aid according to claim 9, 10 or 11, wherein the lid is provided with recesses or any other suitable means for receiving weights for adjusting the frictional engagement between the two surfaces.
13. An educational aid according to claim 12, wherein the weight-receiving recesses are in the surface of the lid remote from the associated planar friction surface thereof.
14. An educational aid according to claim 12 or 13 including a weight in the form of toy figures.
15. An educational aid according to any of claims 9 to 14, wherein the base and lid are generally circular and are mounted coaxially with respect to each other by means of a pin which upstands from the centre of the base and upon which the lid is centrally mounted for rotation with respect thereto.
16. An educational aid substantially as hereinbefore described with reference to Figures 1 and 4A and 4B of the accompanying drawings.
17. An educational aid comprising means defining a sloping path down which different weights can be slid, respective trigger means spaced apart by a predetermined distance along the so-defined path, and timing means whose operation is arranged to be commenced and terminated by-a weight travelling along the path between said respective trigger means.
18. An educational aid according to claim 17, wherein said path-defining means is in the form of a slide arrangement with first trigger means located at or adjacent the top thereof and with second trigger means arranged at or adjacent the bottom thereof, such that initial movement of a weight down the slide path is caused by actuation of the said first trigger means which also commences operation of said timing means.
19. An educational aid according to claim 17 or 18, wherein said timing means includes a visual display in the form of a digital display.
20. An educational aid according to any of claims 17 to 19 including a reset button for said trigger and timing means.
21. An education aid according to claim 18 or to claim 19 or 20 when dependent upon claim 18, wherein the sloping path is supported by ladder means in a generally inverted "VH configuration to represent a child's slide, with associated circuitry for said trigger means and, optionally, said timing means located between the sloping path and said ladder means, preferably in the region of the apex thereof.
22. An education aid according to any of claims 17 to 21 including weights in the form of toy figures.
23. An education aid according to any of claims 17 to 22, wherein the path is provided with interchangeable strips of material of different coefficients of friction.
24. An educational aid substantially as hereinbefore described with reference to Figures 3A to 3D and 6A to 6C of the accompanying drawings.
GB9215347A 1992-07-18 1992-07-18 Educational aids Withdrawn GB2268824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9215347A GB2268824A (en) 1992-07-18 1992-07-18 Educational aids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9215347A GB2268824A (en) 1992-07-18 1992-07-18 Educational aids

Publications (2)

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GB9215347D0 GB9215347D0 (en) 1992-09-02
GB2268824A true GB2268824A (en) 1994-01-19

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GB9215347A Withdrawn GB2268824A (en) 1992-07-18 1992-07-18 Educational aids

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246436A (en) * 1970-05-20 1971-09-15 William Emerson Stults Improved game or teaching aid
US4693687A (en) * 1986-03-14 1987-09-15 Hwang Ming Chuen Apparatus for determining the acceleration of a moving object under gravity
US4731022A (en) * 1986-08-18 1988-03-15 Garland Thomas A Teaching arithmetic principles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1246436A (en) * 1970-05-20 1971-09-15 William Emerson Stults Improved game or teaching aid
US4693687A (en) * 1986-03-14 1987-09-15 Hwang Ming Chuen Apparatus for determining the acceleration of a moving object under gravity
US4731022A (en) * 1986-08-18 1988-03-15 Garland Thomas A Teaching arithmetic principles

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Publication number Publication date
GB9215347D0 (en) 1992-09-02

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