Features: This series of products combines physical science, energy utilization and spatial thinking perfectly into a multifunctional and visualized educational toy, which is an educational...
Madebo hemisphere experiment courseware
[design concept]
In many aspects of human life and production, we need to use the knowledge of atmosphere and atmospheric pressure. Understanding and feeling...
Transmitter course courseware The principle of radio receiving and transmitting is that the transmitter sends out current of different frequency and wavelength according to the requirements of...