# 2.MD.A.1

Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter sticks, and measuring tapes.

## Summary:

This standard focuses on the student’s ability to understand the concept of measuring the length of an object from end to end using an appropriate measuring tool that the student has chosen (e.g, rulers, yardsticks, meter sticks, and measuring tapes). The student will measure to the nearest whole unit in both custom and metric measuring units. Students need to have a wide variety of experiences with hands-on activities that allow them to manipulate the objects being measured.

## Understanding the Standard:

• Allow students to work hands-on with rulers, drawing their attention to the whole number representation on the ruler. Their experiences should extend beyond measuring lines on a piece of paper, and instead should extend to objects they encounter in their day-to-day experiences in the classroom and beyond.
• Extend the experience to include exploration into the number of smaller objects that are necessary to make a larger object, reinforcing the part-whole relationship theme, which is repeated quite often throughout mathematics.

## Questions to Focus Instruction:

• What activities can I provide for my students to ensure hands-on exploration of measuring length of objects?
• What activities and opportunities can I provide that will allow students practice with using smaller objects to measure the length of a larger object?
• How can I use manipulatives and other technologies that will allow for direct, hands-on exploration of measuring the length of objects?
• Can students identify and name the appropriate tools used to measure the length and weight of objects?
• Are students capable of using yardsticks, meter sticks, measuring tapes, and rulers to accurately measure length?

## Skills

Prior to: Students can sort, order, and classify comparable objects according to length, a specific measurable attribute. Students can use the appropriate measuring tool to determine the exact whole number measurement of an object in non-standard units.