| 摘要 |
The present invention relates to a mathematics and geometry device for visually impaired (1) comprising retractable push-buttons (2), which are provided in blocks consisting of six elements arranged in a rectangular arrangement comprising two columns of three elements each or with equal spaces to each other on a plane, and which are in the form of a hemisphere, cube, rectangular prism, etc.; at least one button body (4) which enable the button to be placed on the device, and which, by being placed on the socket (3), makes a linear movement towards the inside - outside of the device when the buttons are pressed and at least one lock system (not shown in the figures) which is located on the button body and which enables the button body to be locked in forward and backward positions; open button which is defined by locking of the button body in upper position; closed button which is defined by locking of the button body in lower position. |
