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.
1 Show the child the first sheet of paper and tell the child that this is the table of 1. 2  Look at the first addition problem: 1 + 1 3  =. have the child place the blue 1 strip at the top of the board and the red 1 strip directly next to it. 4  Show and say with the child: 1 + 1 = 2. Have the child bring Chart 1, the two sets of strips, and the board to the table. 2  Introduce the child to the board. 3  Show the child the red line which shows us that we have reached ten. 4  Show the numbers at the top of the board and tell the child that this is where the answer will be found.