I am a math teacher. Estimation and measurement are important topics now. Math is no longer just addition, subtraction, multiplication... These are also tough topics that have to be developed. They usually go hand-in-hand. There is so much estimation in the workforce today - especially in computer and engineering jobs.

These are very important for science also. I am not very good at measurement - judging it. My daughter is excellent. She will even speak in metrics. I never properly developed these and had a difficult time estimating space in my computer analyzing career.

Help him by asking him how many yards "whatever" is or how many ounces or liters a drink is. Point this out as often as you can - such as a two-liter or 16-ounce container. I was better at numbers (algebra) and this hurt me in science and geometry.