Shop.TutorMeMath.net. This video by Fort Bend Tutoring shows the process of finding the LCD (Least Common Denominator) or LCM (Least Common Multiple). Two techniques are shown and 8 examples worked including finding the LCD with algebraic expressions.
Ovulation Calendar. An ovulation calendar can help you to determine when you are most fertile and most likely to get pregnant. Calendars. The two calendars linked below will help you track your ovulation so you can estimate when you are most fertile. For women who have a 28-32 day menstrual cycle, ovulation can take place between days 11 through 21. Remember this is just an average of days that ovulation could take place since every woman's cycle is different.
Calculation Using An ovulation Calendar: 1  The first day of a period is considered as day 1. 2  Usually on day 14, the egg is released and is waiting for the sperm to fertilize it. 3  The egg has a lifespan of just 12 to 24 hours whereas a sperm can last for about 72 hours in a woman.