The simplest technology gadget is urgent! The materials must be available to everyone.

Paper flowers predicting the weather

Materials: pink colored paper, disposable paper cups, straws, decorations, salt water, newspapers

Production process: put pink Cut petals from paper, apply them in salt water and dry them in the sun. Glue them to one end of a straw to make a flower. Stand it in the center of the paper cup with your hands. Stuff newspapers on both sides to make soil (add water to the newspaper and press it tightly) and decorate.

"The color of the petals is thick, and the weather will be very humid or rainy soon. When it is light, the weather will be sunny