A friend of mine uses this record doc for her "Challenge Friday": goo.gl/PHjKf7. She adds the file to an assignment in Google Classroom as "Make a copy for each student" and the student records their data.

I have created a "souped up" version here, if you'd like your kids to be able to see their data graphed as they enter it: goo.gl/VUChio I put sample data in for the first 4 days so you could see the graphs.