Many of my students struggle with solving basic physics formula, and most of all, in understanding which units go with the answer to the question being asked.

**Is this familiar to you… The question ask for “HOW LONG does it take for the skateboarder to roll 25 meters while moving at 2 m/s?”,** **and the student answers 12.5 m/s!!!**

Students MIGHT use the right equation (time = speed/distance) , but the answer nearly **NEVER** has the right units – **the question is about time or distance and no matter what the student puts “m/s” as part of the answer!** Mind boggling to one degree, but this is all new for them and it’s normal to have trouble applying old skills to new problems.

**Read the rest of this post at my Better Science Teaching blog.**

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