While teachers can review students’ completed activities and send them feedback, we do not provide a way for teachers to keep track of student grades directly from Easel Activities. We recommend keeping track of those grades through Google Classroom or whatever your preferred method is for logging student grades.
To review a completed activity, go to your Easel Activities, then click on the 'Responses' button to view any submitted work. From there, you can open students' submissions, add your feedback, then select "Return" to send the activity back to the student to review.