Grade level is 2nd-5th for this content (depending on state laws and requirements). Resources needed for this activity are the worksheet printed out. I recommend printing out the worksheet because drawing on tablets or laptops can be extremely difficult and could result in less focus. Printing out this activity also prevents students from seeing the answer key; however, some teachers may want students to do this activity without grading. The key is available so that teachers can alter the assignment as needed.
The time needed for this activity is very limited. Students can pick up this material in roughly 20-40 minutes depending on the grade level. Second graders might have a harder time than a fourth or fifth grader. However, this is an activity that can be done within a normal period schedule.
Any questions can be asked at