# Use Units to Understand and Solve Problems

Videos and lessons to help High School students learn how to use units as a way to understand problems and to guide the solution of multi-step problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays.

Common Core: HSN-Q.A.1

Related Topics:
Common Core - Number and Quantity

Common Core for Mathematics

Dimensional Analysis - explained - (part 1)
This video explains the fundamental concepts of dimensional analysis and demonstrate how important they are to solving problems.

Dimensional Analysis - explained - (part 2)
This video further explains the fundamental concepts of dimensional analysis and show how important they are to solving problems.

Solving Dimensional Analysis Problems - Unit Conversion Problems
This video works through two standards dimensional analysis problems. Dimensional analysis is a process to solve unit conversion problems.
Step 1: Write the two givens (beginning and ending)
Step 2: Find the middle with conversion factors
Step 3: Make sure the units cancel out
Stpe 4: Solve the problem.

Dimensional Analysis - Convert Two Units.

Using Dimensional Analysis to Solve Math Problems
Baking Problem, Yardstick Problem, Football Field Length Problem.

Dimensional Analysis - Interpret Units in Formulas
This video explains how dimensional analysis can be used to decide whether an expression/formula represents a length, area, volume or none of those.

Interpreting Line Graphs.

Drawing and Interpreting Line Graphs.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.