To observe the effect of temperature on an increasing volume of water. minute, then 1 minute 30, and finally 2 minutes. minutes, as this gave the best results. times, then adding 25cm3 of water each time, so from 50cm3 to 350cm3. experiment. The variables in this experiment were Volume and Temperature.
1 Speech and language problems are often the earliest sign of a learning disability. 2  Find out more about language-based learning disabilities. 3  Hearing loss is often overlooked, and easily identified. 4  If your child is speech/language delayed, their hearing should be tested.
Loss of independent ambulation (walking) often occurs 15 to 40 years after the initial development of symptoms. The initial presenting symptoms usually involve speech. Common speech problems are repetition of words or phrases (palilalia), rapid speech (tachylalia), and dysarthria. Psychiatric symptoms are more commonly observed and include impulsive behavior, violent outbursts, depression, or a tendency to rapid mood swings.