This item is from the series of solar power building blocks, which is also used as teaching aids.
You will build every model with one or two solar panels. When you put the model under the sunshine, the panels will change the solar power to provide power for the mechanical movements of the models.
When you put the models inside the house without sunshine, you use batteries, which will also provide the power for the models. The movement of the models allows children to observe and learn the simple principle of mechanics.
You can build 12 models with this item, but the bricks of the 12 models are shared. Therefore, you can build only one model at a time.
Set comes with detailed instructions for all 12 models. Children can get creative and build models of their own as well.
*Does not come with original box to save on shipping.