Classifying Objects by Size

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Kindergarten Classifying Objects by Size GameKindergarten Group Order Things by Size Game

Kindergarten Math Activity - Classifying Objects by Size

Children will practice classifying objects by size in this interactive math lesson geared toward a kindergarten level. As students work through this online math activity, they will answer questions like these:

  • "Choose the bigger acorn."
  • "Drag the bigger flamingo into the box."
  • "Choose the smaller triangle."
  • "Drag to sort the objects by size."
  • "Choose the bigger circle."

Math questions are presented in multiple-choice format and drag-and-drop format.

Throughout the math lesson, kindergarten students will have plenty of helpful tools available to guide them through their practice session. A progress-tracker in the upper-right corner of the practice screen shows students how many questions they have answered so far out of the total number of questions in the math game. A score-tracker beneath the progress-tracker lets students know how many points they have earned for correct responses. The hint button offers a helpful written or pictorial clue when students get stuck on a math problem. Plus, a detailed explanation page pops up on the practice screen when students answer a question incorrectly. Finally, 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 (a great option for ESL/ELL students and for children who are auditory learners). All of these tools are designed with your students' math success in mind.

Kindergarten Classifying Objects by Size LessonKindergarten Group Order Things by Size Lesson

Kindergarten Math Practice That Engages and Delights

Are you searching for a fun, yet challenging, online math practice program for your kindergarten class? Look no further than! Our digital math games are the ideal supplement to a comprehensive elementary math curriculum. Whether you are an elementary math teacher, homeschool educator, or school administrator, we're sure you will find lots to love about I Know It, including:

  • Hundreds of digital math lessons ranging from kindergarten to fifth grade, covering essential elementary math topics
  • Math activities written to meet Common Core Standards by accredited elementary math teachers
  • Extensive administrative features that allow you to customize your students' math practice experience…and much more!

Kids are just as enthusiastic about the I Know It online math program as grown-ups! Here's why little ones love learning with digital math games from I Know It:

  • Tons of positive feedback messages that encourage students to "Try again!" even when they make mistakes
  • Bright colors and a bold, kid-friendly math lesson format that presents each practice session as an exciting, educational math game
  • Cute, animated characters that dance around or do a clever trick each time students answer a math question correctly…and more!

We hope you and your kindergarten class will enjoy classifying objects by size in this digital math lesson. Be sure to check out the hundreds of other KIndergarten level math lessons we have available on our website as well.

Free Trial and Membership Information

Sign up for our free thirty-day trial offer and try out this kindergarten math activity, as well as any math lesson on our website, at no cost! We're confident you and your students will love experiencing the difference interactive math practice can make. When your free trial ends, please consider joining the I Know It community as a member. With an I Know It membership, your class will benefit from digital math practice for a full calendar year. Choose from family membership, teacher membership, or school/school district membership. Learn more on our membership information page:

Your I Know It membership comes fully equipped with extensive administrator features that will help you maximize your students' math practice experience:

  • Create a class code and unique usernames and passwords for all of your students
  • Create a class roster and add your students to it
  • Change basic math lesson settings
  • Monitor student progress with class statistics and individual student progress reports
  • Print, download, and email student progress reports

Your students will log into the I Know It website using their own username and password. From the homepage, they can easily find and launch math lessons you have assigned to them for practice. If you choose to give them the option through your administrator account, students can also explore other math activities at their grade level and beyond for additional practice or an extra challenge. Grade levels in the program are designated by letter rather than by number, making it easy for you to assign math lessons based on each child's needs and skill level.

Kindergarten Classifying Objects by Size ActivityKindergarten Group Order Things by Size Activity


This online math lesson is categorized as Level K. It may be ideal for your kindergarten students.

Common Core Standard

K.G.B.4, K.MD.2, MA.K.GR.1.2, K.6E

Analyze, Compare, Create, And Compose Shapes.
Analyze and compare two- and three-dimensional shapes, in different sizes and orientations, using informal language to describe their similarities, differences, parts (e.g., number of sides and vertices/"corners") and other attributes (e.g., having sides of equal length).

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