## Common Core State Standards for Mathematics

Grade(s) 1 resources related to the following standard:
Measurement and Data
Measure lengths indirectly and by iterating length units.
2. Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps.

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This lesson introduces students to the measurable attribute of length and provides practice in measuring length using non-standard units. The lesson is launched using the story Ladybug on the Move by Richard Fowler. Lesson objectives, teaching ideas, and handouts are included.
Lesson Plans
In this 5-lesson unit, students engage in measurement activities involving length, area, volume, time, and weight, using objects, pictures and symbols. Students practice measuring using standard and nonstandard units. Some lessons are introduced using children's literature.
Activity, Interactive Media, Unit of Instruction
Grade Level: Pre-K, K, 1, 2
This document provides descriptions and examples of what each Mathematics Common Core standard means a Grade One student will know, understand and be able to do. This "unpacking" of the standards provides instructional guidelines and was developed to assist North Carolina educators teach the Mathematics Common Core (Standard Course of Study).
Reference Materials
This 26-minute video, the second in a series of twelve, is part of the web-based course for K-8 teachers entitled Learning Math: Measurement offered by the Annenberg Foundation. Participants explore procedures for measuring and learn about standard units in the metric and customary systems, the relationships among units, and the approximate nature of measurement. In this video participants examine fundamental ideas such as unit iteration, partitioning and precision, ratio, and scale. To access the video from this link click on the VoD icon that is next to the video 2 description.
Course, Lesson Plans, Video
Grade Level: K, 1, 2, 3, 4, 5, 6+
Resource is part of a PD collection
This article focuses on young students encountering the measurement of length. The article cites examples of key concepts in recognizing length as an attribute and in proper and improper ways to measure length. Conservation and additivity of length, standard and non-standard units, iteration, and the zero point are among the topics presented.
Reference Materials, Article
Grade Level: 1, 2, 3, 4
Resource is part of a PD collection
In this brief article the numerous uses of the number line are detailed: counting, measurement, addition, subtraction, decimals, and fractions. The article contains visual representations of the some of the concepts and links to related topics.
Reference Materials, Article
Grade Level: K, 1, 2, 3, 4, 5
Resource is part of a PD collection
This professional development video clip of students engaged in Common Core Practice Standard #5- Use appropriate tools strategically. In this video clip first-graders solve a real-world measurement problem by finding the distance from their third floor classroom window to the playground below using standard and non-standard measuring tools. Additional resources include a video transcript, teaching tips, and a link to a professional development reflection activity based upon the video.
Instructional Strategy, Video
Resource is part of a PD collection