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...

Maria Mitchell discovered a comet, became the first female astronomer in the United States, and even has a crater on the moon named after her! Learn more about her passion for the stars with an informative reading passage, followed by...

A virtual field trip takes enthusiastic travelers to the pyramids of Giza. Using Google, scholars explore the grounds of the ancient pyramids found in Egypt then complete three worksheets: a photo analysis page, a reflection sheet, and a...