Concord Consortium
Leap Years and Calendars
How many birthdays do leap year babies have in a lifetime? Learners explore the question among others in a lesson focused on different calendar systems. Given explanations of the Julian, Gregorian, and Martian calendars, individuals use...
Student Handouts
What Year Is It?
This page includes a space to write in the date, but what does the date even mean? And where does it come from? Inform your class about the various calendars and how the Western calendar came into widespread use with an informational...
Curated OER
Time and Timetables
In this recognizing time and timetables activity, learners compare Julian and Gregorian calendars, determine leap years, and apply the formula for finding the day of week and Easter day for any year. Students solve 20 problems.
Curated OER
Leap Year
In this Leap Year reading comprehension worksheet, can learn about the various types of calendars (lunar, solar, etc.) and answer 7 multiple choice questions. Also included is a word search of key terms.
Illustrative Mathematics
Comparing Years
Who knew that the Egyptian, Julian, and Gregorian year were different lengths? Your mathematicians will! They will have to calculate the difference between the years in seconds and find the percent change. Using dimensional analysis,...
Curated OER
The Sled Problem
In this algebra worksheet, high schoolers try to figure out if a sled being auctioned is real or fake with the carvings of G. Washington on it. There is an answer key.
Curated OER
Skin of Our Teeth by Thornton Wilder
In this allusion worksheet, students work in pairs to define the allusions assigned to them from the play 'Skin of Our Teeth.' Students present their research to the class.