Greatest Common Factor

Mrs. Bowles’s fourth graders have been learning about GCF. Today they worked on a Google Slideshow to practice with this topic. We shared this slideshow with the students as an assignment in Schoology so that it would automatically make a copy of the presentation for each student. In another tab, students searched “random number” to pull up Google’s random number generator. We set the Min to 2 and the Max to 36. You can adjust these numbers however you would like. Then click generate to reveal the number. Students were asked to generate 2 numbers and add them to their Google Slide. I did this same lesson with another class and the teacher said it would be great if we could generate random fractions. This awesome Random Fraction Generator Scratch project was the first result in my Google search. I will be using this with this assignment in the future!
[iframe src=”https://drive.google.com/file/d/13fIF6701nG5WtICfPgeVjLJ9KEJJ9mjx/preview” width=”640″ height=”480″]
Then they listed the factors for each of those numbers and selected the GCF. They repeated these steps for the following blank slides and tried to find the GCF for as many pairs of numbers as they could.
[iframe src=”https://drive.google.com/file/d/1R5cCEXkedkGqu_bqIoViUot8kl_b6ek9/preview” width=”640″ height=”480″]
[iframe src=”https://drive.google.com/file/d/1J3nqXLuo6Bp-mQImUCDdt6LxG-3u5OB3/preview” width=”640″ height=”480″]

Here is the template with student directions and a sample of a completed slide.