➕ 2nd Grade Math · Unit 5

Measuring Length

13 short narrated lessons in 3 chapters, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.

Standards: 2.MD.A.1 2.MD.A.2 2.MD.A.3 2.MD.A.4 2.MD.B.5 2.MD.B.6

2nd Grade Math · 9 units
  1. 1Addition and Subtraction Fluency
  2. 2Place Value to 1,000
  3. 3Adding and Subtracting Within 100
  4. 4Adding and Subtracting Within 1,000
  5. 5Measuring Length
  6. 6Time and Money
  7. 7Data and Graphs
  8. 8Getting Ready to Multiply
  9. 9Shapes and Fractions
Picture from the lesson “Inches and Rulers”
Inches and Rulers
Picture from the lesson “Feet and Yardsticks”
Feet and Yardsticks
Picture from the lesson “Centimeters and Meters”
Centimeters and Meters

What your child will learn

Measuring with tools

  1. Inches and RulersMeasure the length of objects in inches using a ruler.
  2. Feet and YardsticksMeasure longer objects in feet and yards.
  3. Centimeters and MetersMeasure objects in centimeters and meters.
  4. Two Units, Two NumbersMeasure one object in two units and explain why the numbers are different.
  5. Measuring with Tools Review ReviewReview measuring length with rulers and other tools.

Estimating and comparing

  1. Estimating LengthEstimate how long an object is in inches, feet, centimeters or meters.
  2. How Much Longer?Measure two objects to find how much longer one is than the other.
  3. Checking EstimatesMeasure to check how close an estimate was.
  4. Estimating and Comparing Review ReviewReview estimating and comparing lengths.

Length problems

  1. Length Story ProblemsSolve word problems about lengths using addition and subtraction.
  2. Number LinesShow whole numbers as equally spaced points on a number line.
  3. Adding and Subtracting on a Number LineShow sums and differences within 100 on a number line.
  4. Length Problems Review ReviewReview solving length problems and using number lines.

Try a question from this unit

From the lesson “Inches and Rulers”

An orange crayon on a ruler, starting at 0.

How long is the crayon?

  • [object Object]
  • [object Object]
  • [object Object]
Show the answer

[object Object]. The crayon goes from 0 to 3, so it is 3 inches long.

Hint kids see after a wrong try: “Look at the number where the crayon's tip stops.”

Key words

  • inch
  • ruler
  • foot
  • yard
  • centimeter
  • meter
  • unit
  • estimate
  • longer
  • close
  • length
  • number line
  • sum
  • difference
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