I use this assignment for all levels of my Tech Ed classes. This assignment has made my job of teaching my students how to read a ruler much, much easier and I have used this assignment for over 10 years. This assignment is short and sweet, allows kids to work at their own pace, and provides all the video instructions for helping kids learn to read a ruler using the included QR video codes. The online ruler reading game is very helpful and kids can take the game over and until they are successful.