## Common Core State Standards for Mathematics

Grade(s) K-12 resources related to the following standard:
Standards for Mathematical Practice
Model with mathematics.

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This 5-minute video follows Carlos and Sara, students in Jennifer Saul's third grade class, as they explain different strategies, both mental and written, for adding multi-digit numbers. These children demonstrate effective presentations skills, while their classmates exhibit the established expectations for being a supportive audience. The page provides reflection questions for the viewer and downloadable supporting materials, including a transcript of the video (doc) and problem solving work samples from Carlos and Sara (pdf).
Instructional Strategy, Video
Grade Level: 2, 3, 4, 5
Resource is part of a PD collection
This formative assessment lesson is intended to help teachers assess how well students are able to use addition and subtraction in a problem solving situation. In particular, this lesson aims to identify and help students who have difficulties with: choosing an appropriate, systematic way to collect and organize data, examining the data and looking for patterns and lastly describing and explaining findings clearly and effectively.
Activity, Lesson Plans
Grade Level: K, 1, 2, 3
This Java applet activity allows students to explore the various situations described in "The Chairs Around the Table" lesson (cataloged separately). The user can select Exploration mode, in which the number of chairs needed for a particular arrangement of tables is displayed; or Guess, in which the user is able to construct an arrangement and then predict the number of chairs. There are two types of tables to choose from and two different table arrangements. Instructions and exploration question are provide.
Activity, Interactive Media
Grade Level: 3, 4, 5, 6+
In this lesson from Illuminations, students explore and discover linear relationships. Linear patterns are identified, extended and described verbally, numerically and algebraically through three investigations. Using manipulatives and the linked applet, "Chairs", learners determine the number of chairs needed when the number of tables is known, and vice versa. Instructional plan, questions for the students, assessment options, extensions and teacher reflections are provided.
Activity, Interactive Media
Resource is part of a PD collection
This interactive Flash applet allows students to understand the distribution of sums that result when rolling two dice. By experimenting with different numbers of rolls, they see how increasing or decreasing the number of rolls affects the outcome. After virtually rolling the requested number of times, the applet displays the result of each roll as well as a bar graph of the distribution. A link to introductory information on probability is included.
Activity, Interactive Media
In this series of three lesson plans from PBS Mathline the instruction is focused on utilizing probability terms in everyday and mathematic situations. Each lesson plan is accompanied by an activity sheet, extension suggestions, and questions for professional development discourse. The video for Part 1 is cataloged separately and is listed as a related resource.
Lesson Plans, Unit of Instruction
This page from the Math Forum blog of Suzanne Alejandre links to a one-minute video during which Max Ray acts out the "Charlie's Gumball" Problem of the Week. The page includes links to PDFs of the scenario, the PoW Packet with the solution and teaching suggestions, a scoring rubric and the "Notice/Wonder" strategy handout that can be used to introduce the problem.
Assessment, Activity, Instructional Strategy, Instructor Guide/Manual, Community, Video
Grade Level: 1, 2, 3, 4, 5
Resource is part of a PD collection