This fact sheet answers the most frequently asked health questions (FAQs) about perchlorates. For more information, call the ATSDR Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects.erchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in large amounts: magnesium perchlorate, potassium perchlorate, ammonium perchlorate, sodium perchlorate, and lithium perchlorate. Perchlorate salts are solids that dissolve easily in water.
Instructions. 1  1. First of all, start with few and easy sign languages. Introducing too many signs at one time will be a useless effort. 2  2. Introduce the signs to your children in such a way as âyou say the word.â It helps in associating the word with the sign language.
Because sign language signs are often iconic in nature, that is the sign looks like the actual object, it can help a child to develop that mental picture. Even when a sign is not iconic, it still gives a visual representation of the word, thereby helping the visual learner create meaning.DD and ADHD children learn better when information is presented visually (create a mental picture) and kinesthetically (through movement). Using sign language signs with these students can give them that visual and kinesthetic representation that will help them to learn successfully.