Eureka Math² Grade 2, Module 3: Measuring Length
In this unit, your child measures length in inches, feet, centimeters, and meters with rulers, yardsticks, and measuring tapes. They estimate first, compare lengths, and find how much longer one thing is. Then they solve length story problems and use number lines to add and subtract. Place value to 1,000 comes next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Module 3?
- Measuring with rulers, yardsticks, meter sticks, and tapes, and choosing the tool that fits the object. Learn more: Measuring with a ruler, yardstick, or tape
- Measuring the same object in inches and centimeters and explaining why there are more centimeters. Learn more: Measuring in inches and in centimeters
- Estimating length in feet or meters before measuring, using a benchmark like a ruler being 1 foot. Learn more: Estimating lengths in inches, feet, and meters
- Finding how much longer one object is than another by measuring both in the same unit and subtracting. Learn more: Measuring how much longer one thing is
- Solving word problems about length within 100 and writing the answer with its unit. Learn more: Story problems about length
- Using a number line as a ruler to show lengths from 0 and to add or subtract them. Learn more: Adding and subtracting on a number line
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
A door is measured using which tool?
- Ruler
- Measuring Tape
- Small paper clip
How you can help
- Guess how many feet long a room or hallway is, then measure it with a tape and talk about how close the guess was.
- Measure a spoon in inches and then in centimeters, and ask your child why the same spoon takes more centimeters than inches.
- Measure two pieces of string or ribbon and ask how many centimeters longer one is, then how long they would be end to end.
Where kids can get stuck
- Measuring a whole room with a 12-inch ruler and losing count of how many times it was moved.
- Expecting more feet than inches for the same object, because a foot is bigger.
- Counting the first mark as a jump on a number line, so the answer is one off.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- inch
- A small unit of length, about the width of a grown-up's thumb.
- foot
- A unit of length equal to 12 inches, about as long as a ruler.
- centimeter
- A small metric unit of length, about the width of a fingertip.
- meter
- A metric unit of length equal to 100 centimeters, a bit longer than a yardstick.
- yardstick
- A measuring stick that is 1 yard, or 3 feet, long.
- estimate
- A smart guess about an amount or a length, made before measuring or counting.
- unit
- The amount you measure with, like an inch, a foot, or a centimeter.
- number line
- A line with numbers in order at equal spaces, used to count, add, and subtract.
- longer
- Having more length; we find how much longer by subtracting.
Ready to build your child’s confidence with measuring in inches and centimeters?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
Join the club
Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Eureka Math² Grade 2 Module 3 cover?
Eureka Math² Grade 2 Module 3 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
- 2.MD.A.1: Measure the length of an object by selecting and using appropriate tools.
- 2.MD.A.2: Measure the length of an object twice, using length units of different lengths.
- 2.MD.A.3: Estimate lengths using units of inches, feet, centimeters, and meters.
- 2.MD.A.4: Measure to determine how much longer one object is than another.
- 2.MD.B.5: Use addition and subtraction within 100 to solve word problems involving lengths.
- 2.MD.B.6: Represent whole numbers as lengths from 0 on a number line diagram.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.