Description:
100% New brand with high quality.
Color: As picture
Size: Whole:10*10*21cm(3.9*3.9*8.3inch
Wooden Ball: 2cm(0.8inch) in length
Crystal Ball:1.8cm(0.7inch) in length
Material:Wood
Package: 1Set
Assembly Steps:
Step one: insert the round bar into the hole corresponding to the base. (if the base is loose, it can be fixed with carpenter’s glue).
Step two: put the hole in the cross arm of the sheep.
Step three: put the installed cross arm on the top of the log bar. (if the connection is loose, it can be reinforced with woodworking glue).
Step four: line up the two balls and tie two different weight beads to the same height.
Step five: tie two beads of the same weight at different heights.
Feature:
Pendulum explains that the clock rack is a teaching experimental instrument made by the principle of pendulum inertia.
Through various swinging experiments on the different weight of the object on the wire rope, the size of the external force and the length of the line, it can be intuitively observed the swing amplitude, the number of swinging and the time of the swinging of the object under the combined action of external force, gravity and inertia.
The larger the external force is, the longer the rope is dropped, the heavier the object is, the larger the amplitude of the body swing, the longer the swing time, the slower the speed.
Ability training: vision, hands-on brain, interest cultivation, intelligence development, hand eye coordination, parent-child communication, interactive toys.
Attention:
1.There might be slightly difference in color, because of the computer monitor settings.
2.With the difference in the measurement method, please allow 1-3cm in size deviation (1cm=0.39 inch).Thank you for understanding!!!
1. If you are satisfied, please leave a 5 star positive feedback, we will be grateful.
2. If you are not satisfied, please contact us, we will provide you
with a satisfactory solution.
|
Item Described: |
||
Communication: |
|||
|
|||
Blindly leaving bad feedback does not solve the problem, I hope you understand, thank you. |
|||
About Delivery |
|||
1. Under normal circumstances, your order will be shipped within 48 hours after successful payment.
2. If you want to get the product faster, you can choose a faster shipping method.
|
|||
Shipping Type |
Shipping Method |
Shipping Time |
|
Express Shipping |
DHL / e-EMS / AliExpress Premium Shipping |
About 5-15 Days |
|
Standard Shipping |
AliExpress Standard Shipping |
About 15-35 Days |
|
ePacket |
About 25-45 Days |
||
China Post Registered Air Mail |
About 30-50 Days |
||
Economy Shipping
(For order under US $5)
|
AliExpress Saver Shipping( it is recommended to choose this type of logistics) |
About 35-55 Days |
|
China Post Ordinary Small Packet Plus |
About 40-60 Days |
||
Tip: Since each country or region is different, the shipping time is different. The above transportation time is for reference only. |