Can the blackboard newspaper be wiped off with water powder?

If it can be wiped off, just wipe it carefully with a wet rag.

Acrylic paint is insoluble in water, but it will soften and swell slightly when exposed to water. Once it swells, it will naturally peel off, so it can be washed away with water.

Gouache painting is very effective in newspaper reporting. The color is bright and eye-catching. It is suitable for slogans and headlines. It is more beautiful than chalk. If it is used on an outdoor blackboard, it is recommended to use gouache paint, which will be better than chalk. Keep it longer.

Advertising paint is made with water. It is convenient and beautiful to paint on a blackboard. You can also wipe off the wrong place with a damp cloth. Even if the color dries over time, just add more water and use a cloth. Wipe it clean. The school uses this advertising color to draw black bulletins, and it is easy to modify.

Extended information:

According to the content of the blackboard, determine the overall color effect tendency, whether it is full of energy, solemn and tranquil, warm and cheerful, reserved and deep, or magnificent. Yes, still simple and elegant. For example, when celebrating the Spring Festival, the color tone should tend to be warm and cheerful, reflecting that military life should be full of vitality and depict a healthy and uplifting atmosphere.

We must pay attention to the overall effect of color. There should be both harmony and contrast to produce a good overall color effect and make people feel the power of beauty. It is necessary to correctly handle color opposition by not only unifying, harmonizing, but also contrasting changes. The principle of unified dialectical relationship.

Reference source: Baidu Encyclopedia-Blackboard