## 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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In this problem learners practice addition, subtraction and multiplication while developing logical reasoning. Solvers apply the given clues along with their understanding of the domino numbering system to determine which dominoes are missing from a set. The Teachers' Notes page includes suggestions for implementation, discussion questions, ideas for extension and support, printable sheets of dominoes (pdf), and a link to an interactive Dominoes Environment (cataloged separately).
Activity
This brief article describes the use of tree diagrams in calculating probabilities. The author provides examples of how tree diagrams are used to calculate specific probabilities and why the language chosen relates to the operations used to find the probability.
Reference Materials, Article
This web site contains information and interactive applets related to our Hindu-Arabic number system. Users learn the history and structure of the system as well as how to count and write numbers. Users can learn and practice various algorithms for whole number computation and explore fractions, decimals and percents in our number system. The site explains various sets of numbers and how they relate to operations.
Activity, Interactive Media, Tutorial, Reference Materials
Grade Level: 1, 2, 3, 4, 5
In this brief video an architect describes his work and the math and technology he typically uses. He demonstrates how he draws measurements to scale and uses computer design programs.
Reference Materials, Video
Grade Level: 3, 4, 5, 6+
This lesson plan helps students understand multi-digit division by constructing area models. The included interactive provides two example problems and helps connect the model to the traditional long division algorithm. Students solve their own problems using graph paper and/or base-10 blocks and progress toward mental strategies.
Activity, Interactive Media, Lesson Plans
This webpage for math students and their teachers offers a searchable archive of questions and answers about fractions and decimals at the elementary level. Equivalent fractions, common denominators, all four operations, fraction and decimal conversions, and other topics are included.
Community
In this practice guide the Institute of Education Sciences (IES) provides reseach based guidelines for implementing a school or system wide intervention program. The guide identifies eight recommendations to help educators use response to intervention practices, provides a brief description of each, establishes the relative strength of the research base, and discusses difficulties that may occur in implementing these interventions.
Reference Materials
Grade Level: K, 1, 2, 3, 4, 5, 6+
Resource is part of a PD collection