Estimating Lengths (Centimeters)

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2nd Grade Estimate Lengths Using Metric System Centimeters GameSecond Grade Estimating Object Lengths in Centimeters Game

Interactive Math Lesson - Estimating Lengths in Centimeters

Put your students' measurement skills to the test with a fun, interactive math game from In this digital math activity, children will practice estimating lengths in centimeters. Here are the learning objectives of this second grade measurement activity:

  • Estimate the length in centimeters of a given object.
  • Decide which length in centimeters is the better estimate for a given object.
  • Determine about how long in centimeters a given object is.
  • Determine which object is closer to the given length in centimeters.

As students work through this measurement lesson, they will answer a variety of multiple-choice questions.

Children will have plenty of helpful tools available to them in this measurement math practice session. For example, when students get stuck on a math problem, they can click on the "Hint" button. They will be shown a written or pictorial clue that will point them in the right direction without giving away the answer. When students answer a question incorrectly, a detailed explanation page will appear on the screen, showing the correct answer accompanied by an easy-to-understand explanation.

Here are a few other built-in math lesson features that will help students make the most of their math practice session:

  • A progress-tracker in the upper-right corner of the practice screen shows students how many questions they have answered out of the total number of questions in the math activity.
  • A score-tracker lets students see how many points they have earned for correct responses.
  • The speaker icon in the upper-left corner of the practice screen indicates the read-aloud feature. Students can click the button to hear the question read out loud to them in a clear voice. This is a great option for ESL/ELL students and children who are auditory processors.

All of these features and tools were designed by the I Know It team to help your students achieve more in their math practice.

2nd Grade Estimate Lengths Using Metric System Centimeters LessonSecond Grade Estimating Object Lengths in Centimeters Lesson

Practice Estimating Lengths in Centimeters with an Interactive Math Game

Estimating lengths in centimeters is anything but boring with this fun, educational math activity from! If you're a teacher or homeschool educator looking for an interactive math practice program to reinforce foundational elementary math concepts, you've found it! Here's what elementary educators love about the I Know It digital math program:

  • Hundreds of elementary math lessons covering foundational math topics from kindergarten to fifth grade
  • Dozens and dozens of math games categorized on our website by grade level and topic for easy access and on-demand assignments
  • Top-quality math lessons written by accredited elementary math teachers and designed to meet Common Core Standards
  • A plethora of handy administrator features that help you maximize your class's math practice experience

If you think teachers are the only ones who love the I Know It online math program, think again! Kids absolutely love practicing their math skills with I Know It! Here are some of the highlights of our program from a student's perspective:

  • Bright colors and a bold, kid-friendly math lesson format presents each math practice session as a fun, yet challenging math game.
  • Whimsical, animated characters dance around and cheer students on each time they submit a correct response.
  • Plenty of positive feedback messages encourage students to "Keep going!" even when they make mistakes.

We hope you and your second grade class will enjoy estimating lengths in centimeters with this online measurement activity! Be sure to explore the hundreds of second grade math lessons in our online collection too!

Free Trial and Membership Options

Take advantage of our free trial offer and try out this measurement activity, as well as all the math games on, at no cost for a full thirty days! We're confident you and your students will love experiencing the difference interactive math practice can make, and we hope you won't hesitate to join our community once your free trial ends. Your I Know It membership will give you unlimited access to our website for a full calendar year. We have membership options for families, teachers, schools, and school districts. Check out our membership information page for details:

There are so many great features to explore in your administrator account as an I Know It member. These features will help you create a class roster for your students, assign unique login credentials to all of your students, give specific math lesson assignments to different students, change basic math lesson settings, monitor class and student progress with detailed progress reports, print, download, and email student progress reports on demand, and much more. You will love using your parent or teacher administrator account!

Your students will log into the website using their own unique login credentials. They will be shown a kid-friendly version of the I Know It homepage. From here, they can quickly find and launch the math practice activities you have assigned to them. If you choose to give them permission through your administrator account, your students can also explore other math activities at their grade level and beyond for extra practice or an added challenge. Grade levels on I Know It are designated by letter (i.e., "Level B" for second grade), making it easy for you to assign math lessons suited to each child's needs and skill level.

2nd Grade Estimate Lengths Using Metric System Centimeters ActivitySecond Grade Estimating Object Lengths in Centimeters Activity


This interactive math lesson is classified as Level B. It may be ideal for second grade students.

Common Core Standard

2.MD.3, MA.2.M.1.1, 2.9D
Measurement And Data

Measure And Estimate Lengths In Standard Units.
Estimate lengths using units of inches, feet, centimeters, and meters.

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