PLEASE SELECT THE DESTINATION COUNTRY AND LANGUAGE :
(주)숲속의샘 |
한국 |
$10.50 |
$60.00 |
P00000PC |
Select item with details above |
Name | Quantity | Price |
---|---|---|
Goldland Tong tong rail / Science Books / Teaching aids / After-school materials / Goldberg | 10.5 ( 60.00) |
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The ball bounces through the rails. You will learn gravity and inertia as you build devices.
Material
Corrugated cardboard, Plastic, Rubber, Thread
Components
First rail leg, Second rail leg, Third rail leg, 3 Rails, Rail guard, Bottom of second rail, White rod, Snap button, Red rubber ring, Thread, Switch ,stopper
Goldberg connection. The ball from the other device rolls onto the first rail and bounces to the second and third rails in order.
On the third rail, the ball rolls under the second rail to activate the switch.
It can be used between E-2 and E-4 and can be used depending on the situation in other devices.
'Tong Tong Rail' Principle of Science
Gravity : The force by which objects on the earth are drawn toward the center of the earth.
Inertia : The force by which objects on the earth are drawn toward the center of the earth.
Potential energy by gravity : The property of an object trying to continue in a state of stationary or constant motion unless it is subject to external forces.
1 step. Making a rail
① Fold the three rails along the fold line and secure them with snap buttons to fit the holes as shown in the figure.
② Secure the rail guards through the grooves on both sides of the rail.
③ 3 rails completed.
2 step. Making the first rail
① Fold the first rail legs along the fold line and secure them with snap buttons.
② Place the rail on the first rail leg and secure it with the snap button.
3 step. Making the third rail
① Fold the third rail leg along the fold line and secure it with the snap button.
② Place the rail on the third rail leg and secure it with the snap button.
4 step. Making the second rail
① Fold the second rail (Four) along the fold line.
② Install the two long and two short legs of the second rail facing each other. Then secure the rails with snap buttons.
③ Fold the switch along the fold line and secure it with the snap button.
④ Connect the switch and the stopper with a thread, then tie a knot.
⑤ Fold the bottom of the second rail along the fold line.
Connect the bottom of the second rail and the switch with a white rod and fix it with a red rubber ring.
*Assemble the rubber ring well so that the switch moves well.
5 step. How to operate a 'tong tong rail'
① Install rails side by side in the order of the first rail-the second rail-the third rail.
Adjust the rail spacing so that the ball starts from the first rail and goes well into the second and third rails.
6 step. Connecting Goldberg Devices
① Install the E-4 overpass rail on the front or back of the second rail and secure the ball with the stopper.
② The ball bounces along the rails. Also watch the ball move and the switch in action.
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