CU2-14

2:14 **Title:** Calendar - Celebrating birthdays on Solar vs Holiday Anniversary
 * Goals:** Students will compare where their birthdays fall in relation to Jewish Holidays. Students will estimate their Hebrew birthday and discuss how birthday celebrations would change if they were only celebrated on the nearest holiday instead of on the anniversary of the birthday.
 * Materials:** lined paper, pencils, construction paper, crayons, two different Hebrew calendar years and standard calendars
 * 1) **Gain the attention of the learner:** Draw a large birthday cake on the chalkboard. Ask students to tell you when their birthdays occur.
 * 2) **Review relevant past learning** One of the problems with the Hebrew calendar is the month short fall. What happens to even out the months over time?
 * 3) **Present new material** Every year birthdays fall on the same date, but a different day. Is there one day of the week over another day that is better to have a birthday? A hundred years ago, birthdays were associated with a holiday. So you knew that you were born around Pesach (or Rosh Hashsanah, etc) but not the exact date
 * 4) **Provide guided practice** Help students locate their birthdays in first Hebrew calendar. Then locate their birthdays in the second calendar. How many days difference are there between calendars?
 * 5) **Provide independent practice** If the calendars continue to move around, how would your birthday change every year? Remember how many days passed between the two birthdays, when would your birthday fall in two years? Have students draw a picture showing how their birthday celebration would change because of what month they are celebrating it.
 * Close the lesson ** Birthdays are special to the people celebrating them, if the dates floated it wouldn’t be as important. Why is the calendar so important to farmers? How would the floating calendar affect the holidays we celebrate?