The lesson is all set up for you. Students look at a picture and try to estimate the height, the distance, how many, etc…. Then it gives the answer. The days are set up in sequence. So you may estimate the height of a man, then the next day there will be a picture of the man standing next to a woman and you have to estimate her height (using what you learned the day before), then the next day they will have the man the woman and a child and you will have to estimate the height of the child. There is a handout that you can have student use to record their answers.
Blog post with link to the handout you would use.
Samples below of the sequence of days: