# Compare Length - Lesson for Grade 1, Chapter - How to Measure Using the World Around You

In the "Compare Length" lesson, part of the "Foundations and Applications in Measuring, Time, and Data" unit, first-grade students embark on an exploratory journey to understand and apply basic principles of measurement using objects from the world around them. Throughout the lesson, students will engage in a variety of activities including the "Comparing with a Third Object Worksheet," "Compare Length in Centimeters Worksheet," hands-on "Comparing with a Third Object," and the "Ordering by Length Worksheet. "

Students will learn how to effectively compare the lengths of different objects, both by using a third object as a reference and by measuring in centimeters, a foundational unit of length in the metric system. This skill is important as it lays the groundwork for understanding relative sizes and distances, an essential part of spatial awareness and mathematical reasoning. Through the "Ordering by Length" activity, learners will further develop their ability to analyze and sequence objects based on their size, enhancing their critical thinking and problem-solving skills.

Understanding how to measure and compare lengths is not only crucial for academic success in mathematics but also for practical, everyday tasks.

Estimated classroom time: 13 min
Chapter: How to Measure Using the World Around You
Unit: Foundations and Applications in Measuring, Time and Data
Click on any activity below to start learning.
1st
3:00 min
Comparing with a Third Object Worksheet
worksheet
2nd
3:00 min
Compare Length in Centimeters Worksheet
worksheet
3rd
4:00 min
Comparing with a Third Object
video
4th
3:00 min
Ordering by Length Worksheet
worksheet
Share your lesson with students by clicking:
• ### Activity 1 / Comparing with a Third Object Worksheet

Take your child’s measurement skills to the next level by comparing answers with yet another object on this free downloadable math worksheet! To get started, guide your kids to observe each pair of objects pictured. Which one is longer? Check the box next to mark you answer. Then, read the question below and view objects across the pairs to compare those, as well! Check the box to move on to the next grouping of colorful pictures!

• ### Activity 2 / Compare Length in Centimeters Worksheet

Your child must have a good idea of how to accurately measure things, and some adding and subtracting skills to successfully complete this worksheet. The task is to figure out the difference in length between two objects. To do this, your child must first measure both items and then, subtract the length of the shorter object from the length of the longer one.

• ### Activity 4 / Ordering by Length Worksheet

Comparing objects is just one step towards learning to work with measurement, but before buying that first ruler, do this first! Kids must understand the concept of length and practice by comparing objects and describing them as shorter or longer than others. This printable math worksheet will prime your child’s mind for measurement by tasking little learners with looking at pictures of objects and categorizing them by length before answering important questions designed to make them think!