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.
You'll start to notice signs that you're fertile about five days before you ovulate. Ovulation usually occurs between 12 and 14 days before your period starts (Fehring et al 2006) . This is an average, so it could be a couple of days earlier or later. For example, say you have a regular 28-day menstrual cycle. Count the first day of your period as day one. Your fertile window is likely to be around days 12 to 17. However, a lot of women have an irregular cycle. If your cycle is irregular, ovulation may occur a week earlier or later from one month to the next (Fehring et al 2006) . Working out your fertile window using your cycle dates alone is an inexact science.